A really fun app, which will help to keep you moving, is Bit breaker.

https://apps.apple.com/us/app/bit-breaker/id519322513

It's a free motion game (unfortunately only available for Apple devices) where the aim is to break all the blocks by jumping and moving in front of the camera.  My family loved playing it in lockdown! Hours of fun and laughter with a keep fit twist!

2. One to polish up your geography skills is https://www.toporopa.eu/en/. Challenge yourself to learn all the countries or even the capital cities in Europe. If flags are your thing, there's a flag quiz too! Lots of fun for the budding geographers out there.