What annual passes are worthwhile?

[OneIsAWorldOfBooks]

Thinking of asking for contributions towards an annual pass for somewhere for xmas for DS (7). There's me, DP and DS, we have a NT membership already that we use all the time. What memberships have people had that have been worth the money? For info we live South Staffs and are both drivers so able to travel, but would like a membership we can use fairly often so don't want it to be somewhere too far away. DS would absolutely love something like Conkers or Twycross Zoo but these are both just over an hour away so I don't feel we visit enough to warrant a membership.

Thanks!

ones that you would actually use.
no point getting a pass for a zoo that is a pain in the ass to get to or a place that has shit opening times.

Is Chester Zoo too far for you? You only have to go three times a year to get your money's worth.

Trentham Gardens?

Chester Zoo and Twycross (and several others) have reciprocal membership so would look at that. We had a Twycross Zoo one and, with a couple of trips to Chester Zoo too, we definitely got our money's worth despite living around 45 minutes away.

Our local trampoline park does a 2 month pass for £25.