present for BIL and kids

[Caip]

Hi
Does anyone gave any suggestions for what I could get my BIL that would be fun for him to do with his kids who are 5 and 7? Outdoor would be good if poss
Budget is about £30
Thanks

badminton or soft tennis set for the garden

swing ball

mini golf set

Theatre voucher
Crouquet and quoits set for summer
Flask, plastic mugs and hot choc for days out in the winter

A giant Jenga game,
A planter some gardening equipment and some seeds and bulbs they could grow together.