An instant read prob thermometer.
[deleted]
A funnel. It comes in handy at the most random times.
Tubshroom. Catches your hairs instead of gunking up your tub drain. Less gross than fishing out the long slimy clog that’s been festering in there for weeks.
Tire patch kit and mini air compressor. It will allow you to fix most flats on the road without any other assistance. You can usually get both for around $20. Extremely handy to have.