An interesting topic can't wait to see what others are work ng ...on you too kbalch!
I have a list it will get pretty long if get detailed I will try to keep it short.
I picked up a frozen 3phase cord reel for $20 a couple of months ago. they cost over $1000 new so I am to be shooting that. It is full of dried grease. I have been trying different solvents on the main spring as it is the main problem. it looks like brake fluid and pb blaster are doing an OK job. I am trying to learn how to coil my own small spring to keep pressure on the brushes. the Honeywell company is to important to return any of my part requests.
been studying how drum brakes work, had to change a drum cylinder...never had a car that still had drum brakes yet. drilled the old one out to try and save it but no luck.
learning about balancing tires on a hf balancer had to fix the balancer first too.
looking at trapping racoons, one has taken residence in our attic.
looking at propagating barberry bushes from clippings, and antihisis what kinds of non invasive region native wild flowers to plant around the house for a security hedge. planted about a dozen clippings today
reading about how to improve on front control arm design for my Nissan. how to avoid bumpsteer if I reduce the ride height.
playing around with plastic welding, dent pulling, spraying truck bed coating as an undercoating (failure cloggerled the spray gun.)
tried making vegan homemade candy similar to mounds bars, not perfected yet. Trying to improve on some really inexpensive hard apple cider for the wife's church friends.
that was today and last night