You can make lik3 a balloon arch or garland and under each balloon put a line of streamer as the same color

I made a rainbow smash cake for a first birthday. Really easy, different coloured cakes stacked together with cream or ganache. Ice or cover with more ganache and enjoy

I agree that the answers are really helpful.

There are some great ideas here.
The rainbow cake idea is great and will be a huge hit.
The candy buffet idea with lots of colour is great too.
I like to goodle ideas and then see what I like. Enjoy the celebrations.

Rainbow cakes. Any sort, as long as multi coloured

my friend had all the guests wear a different colour shirt or dress

We did a rainbow unicorn birthday theme for my daughter.. We had rainbow coloured cupcakes, a full rainbow themed lolly bar. All different coloured foods ..it looked great

Rainbow cakes are always a big hit at our parties.

Sounds like a fun, I am doing an over the rainbow theme party and going to buy cheap plastic table cloths to lay across the entry way in a rainbow color.
Rainbow balloons and streamers. All good.

some great ideas here. thank you

Love the simple rainbow cake recipe! Think I will give it ago!
Thanks!

Thanks for the feedback everyone.
I basically did a fair combination of the suggestions posted here.
Round cake cut in half, iced with smarties inserted on the front side as the rainbow. Cupcakes with blue frosting then the sours bent on-top as the rainbow also baked rainbow coloured cake pops with pink icing and a multitude of sprinkles- the rest of the party was then decked out (but tied in with the rainbows) to the party girls colour preference. Which went along the lines of “long as there is pink and lots and lots of sparkles” lol – so that was a large combination of pink table runners, with different tones of pink baubles in vases, pink patterned stuffed owls (owls were on the invites sent out) metallic pink wire balls, sparkling owls, glass owl tea-light holders, pink and clear crystals….definitely an overload of pink but the birthday girl loved it and the whole event went smoothly and happily!

Check out pinterest. It has some amazing ideas for a rainbow party. Good Luck

I did one last year it was a rainbow unicorn theme. I did a lolly bar with all different coloured lollies in jars, I got rainbow striped plates, cups, hats party whistles, I also got different coloured balloons and placed them around the party. Food wise, I did many different coloured food.

Food wise as someone else posted rainbow cakes are easy, vanilla cake mix seperated and placed in different bowls, mix different colours through. Bake put cream in between then ice with white and use those rainbow sour straps to make a rainbow. Otherwise a normal cake, cut into rainbow shape and ice, then use different coloured sugars to make it a rainbow. For the other food rainbow shaped biscuits (there are some easy recipes with only three ingredients). I would also do rainbow fruit kebabs using strawberries, orange or mandarin, banana, kiwi fruit, blueberries. Fairy bread is a winner and fits the theme. Maybe also clear cups with lemonade coloured different colours with food colouring.

you can easily do a rainbow cake, just mix up several different batches of vanilla cake and add colouring then one by one slowly pour them into a cake tin and keep repeating then you will end up with a nice rainbow cake. Decorate with white icing and put smarties or similar on top of it in rainbow pattern. Get clear cups and make up little fruit cups for kids to have, put colourful things in there like red watermelon/strawberries, blueberries, green kiwi etc. Again use clear cups and make jelly cups for the kids but use different coloured jellies and allow one layer of colour to set before putting the next layer on top so you get a rainbow cup. Decorations can be as simple as multi coloured ballooons and streamers in the rainbow colours. Use a white tablecloth with brightly coloured plates etc or if you’re game tie dye a table cloth so it’s brightly coloured. Make simple biscuits with a rainbow on the icing. Umm if I think of anymore I will post them lol

Rainbow Cake, bake a vanilla cake and mix lightly through food dye colouring of your choice and makes a rainbow colour cake.