Can heartily recommend paying a visit to an iFly centre - great fun!
I joined our local U3A last year and far from being a boring old farts club - as predicted - so far I've been gliding, ridden on a Segway - both brilliant - tried archery which I was useless at (didn't even hit the target board so won't be signing up for the Olympic archery team ) been luging tobogganing and doughnutting at the local chill factor, and had a go at pseudo parachuting. Thoroughly enjoyed that, but it certainly didn't inspire me to try the real thing. Oldest person there was 83!
Next on list is " heavy horse riding " on the beach at Silecroft - shire horses.
I can really heartily recommend joining a U3A group - gets you out, gets you active, and you meet really nice fun people.