Cosmos Party Supplies for your one-stop party box

Let our party box sort your party problems!

At Cosmos Party Boxes, we know how much time it takes to plan your perfect party, so we are making it easy for you. We supply your tableware, party bags and even games in a box, so that all you need to do is pick your theme and place an order.


From only £6.99 per person

for all you need other than food!

Party boxes for boys from Cosmos Party Supplies

Boys Parties

Toy Story, tractors, superheroes and much more.

Girls party boxes from Cosmos Party Supplies. Photo by Lidya Nada on

Girls Parties

Princesses, Unicorns, superheroes and much more.

Themed party boxes suitable for boys from Cosmos Party Supplies

Toddlers Parties

Teletubbies, Peppa Pig. Paw Patrol and much more.

Life Events - from birth to 100 from Cosmos Party Supplies

Life Events

From baby showers to 100th birthdays and beyond!

Crafty party box from Cosmos Party Supplies

Crafty Parties

For adults and children: make something to take home.

Party extras from Cosmos Party Supplies

Party Bags

Add filled party bags for a really easy life.

Our Best Selling Themes