Forget the idea that a festive kids room needs a designer budget. This season, the most shareable Christmas rooms on Facebook are not the most expensive — they are the most colourful. One mum’s $45 Kmart bench re-cover turned into a viral rainbow playroom, praised by the Kmart Mums Facebook page, and budget rainbow makeovers are still flooding parent groups this week. Here are 10 rainbow playroom ideas that turn any kids room into a Christmas-ready, joyful space — using Kmart, B&M and Dollar Tree finds plus a few clever Amazon swaps.
1. Start with a peel-and-stick rainbow mural
The fastest transformation on this list: a giant rainbow wall decal. No paint, no mess, and renters can take it down in January without a trace. Place it behind the bed or the play corner so it anchors the whole room. Choose a watercolour-style decal in warm rainbow tones — it reads expensive, even though the whole change costs less than a takeaway dinner.
2. Re-cover a basic bench in rainbow fabric
This is the hack that started it all: a plain grey $45 Kmart bench re-covered in vibrant rainbow fabric with a staple gun. The same trick works on any tired footstool, storage ottoman or IKEA bench. Use a cotton duck or upholstery-weight print so it survives juice spills and enthusiastic toddlers.
3. Build a washi-tape rainbow pegboard
A plain pegboard becomes a rainbow command centre with two tubes of washi tape. Lay out stripes in rainbow order, mount it above a craft desk, and load it with baskets for crayons, toy cars and hair accessories. It is the most-liked detail in every viral playroom post because it looks custom — for about $12.
4. Layer cube storage in bold colours
Rainbow rooms fall apart without organisation. Colour-code cube storage shelves — red cubes for building toys, yellow for art supplies, green for dress-up — so tidy-up time becomes a sorting game. Open cubes keep everything visible, which means children actually put things back.
5. Swap in a kid-sized Christmas tree
A 3-foot pre-lit tree is the perfect Christmas layer for a playroom: tall enough to decorate properly, small enough to sit on a storage unit out of harm’s way. Let the kids dress it with rainbow baubles and paper chains, and add a star topper they picked themselves. It photographs beautifully next to the rainbow wall.
6. String candy-coloured garlands across the ceiling
Ceiling garlands are the secret to making a playroom feel instantly festive. Thread felt balls, paper fans and pom-pom strands along the ceiling in rainbow order — no ladder-damage required with removable hooks. In December, swap a few strands for red, green and gold ones and the room flips from rainbow to Christmas in minutes.
7. Make a second-hand storage nook look built-in
One UK mum scored second-hand pine cabinets for under £100 and painted them to match her rainbow playroom wall — guests assume they are custom joinery. Paint an alcove the same blue as your mural wall, drop in thrifted cabinets, and you have a reading nook or toy library that cost less than a single flat-pack unit.
8. Add oversized velvet bows to everything
Bows are the Christmas 2026 trend that works on any budget: tie giant velvet bows on the tree, the bench, the storage cubes and even the window frames. Red velvet reads classic, candy-pink reads playful — buy a bulk pack and you can bow the whole room in an afternoon.
9. Create a Christmas craft station
Dedicate one corner to a Christmas craft table: a small table, washable paints, sticker sheets and a drying rack of pegs on a ribbon. Kids make their own garlands and ornaments, the room gains layers of handmade decor daily, and the craft output becomes the decoration — a self-decorating playroom.
10. Finish with cosy lighting for winter evenings
Warm white fairy lights turn a colourful room magical after dark. Drape them along the pegboard, around the window frame and through the mini tree. Battery-operated strings mean no trailing cables near little hands, and a timer plug puts them on automatically at dusk.
Shop this look
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- Peel-and-stick rainbow wall decals
- Colourful kids cube storage shelves
- 3ft pre-lit mini Christmas trees
- Bulk velvet Christmas bow ornaments
