Let me divide all possible time spendings in categories:
1. Sports - all I have mentioned in edit but not limited to it. Somebody likes speed, somebody likes heighth, somebody likes heavylifting. Sometimes health issues limits what you can do. Sometimes skill matters. Or good company. Or geography, seazon, weather. Looking at weather forecast may be a big deal for newbie outdoor discoverer.
2. Travelling - chose your desired transport, point B, time, money, DRP and go!
3. Doing something with your hands - works best either at your own yard or when you are in group with experienced master. Examples: welding (but not soldering), gardening, building, crafting, digging.
4. Just relaxing - cafes, open-airs, festivals, artwatching, birdwatching, trainwatching, laying on the beach, taking part in a barbeque party. Definitely more that I can count, just only a music festival of different genre may be so different from other genres.
5. Degrading - doing criminal activities, making stupid videos for yt/tt, watching that videos. Also boozing.
6. Hunting for sex - no comments.
7. Real hunting (not only shooting) or at least fishing.
8. Meditating (for advanced outdoor masters) - try spending as much time as possible (8-12 hours is a good start) without moving or bio feeling, or even thinking (especially without thinking). Works best if a long and exhausting way back home is needed afterwards. Does not work if any computer device is anywhere less than 1km near you. Needs a little square carpet of foldable chair for sitting (laying is not an option).
9 (bonus for programmers) Coding somewhere on open air, try this now because on the Northern semisphere these are the warmest days ever. Needs lots of spare batteries especially if Internet is needed.