Unicorn Party Ideas: The Complete UK Guide

Unicorn parties are one of the most requested children's party themes in the UK — and the visual appeal is obvious. Pastels, glitter, rainbows, sparkle. Done well, a unicorn party is genuinely magical. Done carelessly, it's a lot of pink plastic and glitter that ends up in the bin.

This guide focuses on unicorn party ideas that look beautiful and hold up — decorations, food, games, party bags and costumes that work in practice, not just on Pinterest.

Unicorn Party Decorations

Colour palette

Pastel rainbow: blush pink, lilac, mint, sky blue, peach, gold and white. This is the signature unicorn palette. You can work with all of these or choose two or three and keep it cohesive — blush + lilac + gold is a particularly elegant combination.

Key decoration elements

• Balloons — a mix of pastel biodegradable latex balloons (blush, lilac, mint, champagne, peach, coral) creates the quintessential unicorn look without a single unicorn-shaped balloon. A balloon arch or garland in these colours is the most impactful decoration you can make.
• Iridescent and holographic elements — foil fringe curtains, holographic table runners, iridescent confetti. These catch the light and create the "magical" atmosphere.
• Flower crowns — floral crowns are a brilliant unicorn decoration and double as an activity (children decorate their own) and a take-home item
• Rainbow streamers — a rainbow paper streamer fan in the door frame or behind the party table is instantly recognisable and costs almost nothing
• Gold foil details — gold tablecloth, gold paper plates, gold straws. Gold lifts the whole pastel palette.

Unicorn horn centrepiece

Make a unicorn horn from gold card rolled into a cone and painted or wrapped. Attach it to a balloon or place it at the centre of the table. Very simple, very effective.

Unicorn Party Food Ideas

The rainbow food approach

The most effective unicorn party food strategy is the rainbow plate — arrange fruit, vegetables or food items in rainbow colour order. It looks stunning, takes minimal preparation, and works for almost any food item.

Savoury food

• Rainbow vegetable platter — cherry tomatoes (red), carrot sticks (orange), yellow pepper (yellow), cucumber (green), blueberries (blue/purple). Arranged in a rainbow arc.
• Unicorn sandwiches — cut with a star or heart cookie cutter, arranged in a rainbow pattern on the plate
• Pastel pasta salad — cold pasta in a light dressing, with pastel-coloured vegetables
• Rainbow skewers — fruit or vegetable skewers in colour order

Sweet table

• Unicorn cake — white frosted layer cake with pastel rosettes, a gold horn and edible flower decorations. Achievable with store-bought frosting and basic piping.
• Rainbow cupcakes — white-frosted cupcakes, each topped with a different colour buttercream swirl
• Unicorn bark — white chocolate melted and spread thin, drizzled with pastel food colouring, then sprinkled with edible glitter and rainbow sprinkles. Set and break into shards.
• Pastel meringue kisses — small meringues piped in pastel swirls
• Rainbow jelly cups — layer different colour jellies in clear cups

Drinks

Pink lemonade labelled "Unicorn Tears" is consistently one of the most popular unicorn party drink ideas. Elderflower cordial with a small amount of pink food colouring works well.

Unicorn Party Games and Activities

Flower crown making

Provide plain headband bases, artificial flowers, ribbon and a glue gun (adult-operated). Children choose their flowers and create their own floral crown to wear at the party and take home. Works beautifully for ages 4+. Takes 20–30 minutes and produces a take-home keepsake.

Decorate your own unicorn horn

Pre-make plain white card horns. Provide metallic pens, glitter, stickers and ribbon. Children personalise their horn and attach it to a headband or wear it as a hat. Quick, engaging, results vary wildly and children love showing each other.

Pass the magical parcel

Standard pass the parcel with a unicorn twist — each layer contains a small unicorn-themed activity (strike a unicorn pose, make a unicorn sound, neigh like a horse). The final prize is a unicorn gift.

Pin the horn on the unicorn

Classic pin the tail variant with a large unicorn head cutout and gold horn props.

Unicorn colour mixing

Give each child a palette of pastel food colouring and a glass of water. Challenge them to mix the most magical unicorn colour. Simple, curious, genuinely absorbing for younger children.

Unicorn freeze dance

Musical statues but when the music stops, children must freeze in their best unicorn pose. Works brilliantly for under-7s.

Unicorn Party Bag Ideas

Browse the full unicorn party collection for decorations, tableware and accessories. Unicorn party bags give you freedom — the theme is broad enough that almost anything in pastel colours or with a sparkle element fits. The risk is defaulting to cheap plastic unicorn items that feel generic. The best unicorn party bags mix visual magic (the presentation, the colours) with contents that are genuinely useful or engaging.

What to put in unicorn party bags

• Floral crown kit — a simple headband with a few artificial flowers that children can assemble themselves at home
• Rainbow notebook and pencil — a pastel or rainbow notebook is universally useful and fits the theme perfectly
• Unicorn or flower temporary tattoos — the butterfly and flower tattoo range fits the unicorn theme well
• Flower seed packet — wildflower seeds in a pastel envelope, labelled "Unicorn Garden Seeds"
• Pastel craft kit — a small model-making or colouring kit in the theme palette
• Lip balm or small beauty item — for older children (8+), a pastel lip balm or nail stickers fit the theme

Browse the full party bag fillers range and our eco-friendly party bag fillers for plastic-free options. Present in a pastel pink or lilac paper bag tied with gold ribbon. Add a unicorn sticker seal and a handwritten label — "From [child's name]'s Magical Party."

Unicorn Party Costumes

• Unicorn horn headband + white or pastel outfit — the simplest and most popular option
• Rainbow fairy — pastel layers, flower crown, face glitter
• Magical princess — any pastel dress with a unicorn horn headband
• Unicorn onesie — widely available, works for all ages
• For boys who want to join in: "Magical Knight" — any costume with a gold horn badge

Unicorn Party Planning: Age Guide

• 2–4 years: Focus on the visual magic — rainbow balloons, pastel colours, simple games. Children this age don't need the full theme.
• 5–7 years: Sweet spot. Flower crown making, unicorn freeze dance, decorated horn activity. Full theme engagement.
• 8–10 years: Add sophistication — curated rainbow food displays, flower crown making with real flowers, slightly more grown-up activities.