Since going back to school a week ago one or both of my two (5 and 7) have had taster sessions during the school day for football, judo, basketball, gymnastics and choir (the only free one, run by a teacher).
They go to a small village school (one form entry) so it's great that they get companies in to provide access to activities, but the costs vary wildly between companies and I've got a hectic calendar at the moment!
Am just interested to see what other schools provide.