Steel-nosed workmans shoes of good quality. They will protect some of the most vulnerable parts of your body.

Gloves. For welding, grinding and handling sharp parts.

Fire extinguisher.

It is not only the tools you have to think about:
Make sure your workplace is well ventilated and can be cleaned easily.
Make/acquire sturdy benches and cupboards for your stuff.
Dont forget to have enough power outlets so that you can reduce the amount of cables that you can trip over or accidently damage.
Keep a tidy workplace with all your tools within easy and visible reach.

By the way... your posting is not ridiculous. It is good common sense and may benefit others.