Ideas for present for a whole family that's not "stuff" iykwim? Zoo membership, that kind of thing please

[OliviaMumsnet]

Hello

I am looking for inspiration for something to buy my lovely nieces and nephews who are very lucky in the toy and books department. My sister is vg at taking them out and about so I'm thinking something like a zoo membership (except I think they already have this). They're London based btw
TIA

Sorry if this is off at a tangent too much - it's not an activity or an outing gift - but Pizza Express now do gift cards.

oh yes please!

Kew membership is great if they are on the right side of London.