How to thank parents?

From the moment we were engaged my parents insisted on paying for the wedding. Since my FH family is from OOT (approx. 25) & we are only inviting 30 guests (out of my parents 250) I didn't argue.

I can't believe how amazing they have been! We're paying for the limos, invitations & favors but that's it. They don't argue when our tastes differ & are the one's pushing us to not scrimp & penny pinch as much as we were, since to them this day comes along once.

Since they have been so accommodating we want a really nice way to thank them at the wedding. Not something too expensive but not something cheesy. Just something that they will appreciate & enjoy - especially after such an expensive & hectic event.

Thanks!

I want to buy FH's parents new computers but FH hasn't agreed to that but he will
They are giving us a nice 'wedding gift' which we told them not to give us until after the wedding but it will help pay for a lot. And FMIL is giving me a shower in NY and paying for rehearsal dinner. To me they have been very generous and deserve something nice.

Not sure what to do for my mom yet, she can't afford to help financially but will get a nice gift anyway and we'll see if my dad comes through with anything.