You can do odd-jobs while having conversations, mulling over a problem, or to kill time during TV ad breaks ;-)
Here are a couple of ideas to get you started:
1. Dust ceilings and walls - see any interesting spider webs?
2. Clean door frames and handles.
Diarise when to do any maintenance needs you noticed along the way, such as paint touch-ups.
If you solved a problem or got a bright idea while doing such odd-jobs, write that in your diary, too!