Easy birthday party ideas for 3 year old

[surreyisik]

Hi there, would someone please be able to give me some easy & fun birthday ideas for 3 year old DS. Both DH and myself are working insane hours so can't do much preparation. It will be about 10 adults and 10 kids of close ages. We can do it both at home / garden and outside, although it will be November so not sure of outdoors. Budget wise probably could do up to £500. Thanks in advance!

Find a local softplay, ideally one that can also provide food.
Next best: hire a hall/room and a good entertainer

Yes soft play. Turn up, sit and drink tea, then leave.

Yep, softplay.
Feed them something easy like a slice of pizza from dominos and go home.

We've had soft play/play cafe parties, and been to friends parties at a role play centre, gymnastics club and trampoline park. Also recently went to a bouncy castle party at a leisure centre, although I think they had to arrange the food.