I hated ruining both the hub bolt and the nut. Yes, you can buy new ones fairly cheap, but I have always liked to save the old stuff whenever I can. You can grind the mushroomed end off the bolts or split the nut. But you still have distorted threads. I bought a die and split it by grinding part way through and then breaking it so the jagged edge would align the two halves. Now I can place the halves around the good threads on the bolt and slide the die into the holder and back it over the distorted threads. With a little practice this makes it easy to save the threads. It would be more practical on bolts that there is no replacement for.
Another tool I found handy is an old brake drum lathe I found at a swap meet. (Cheap) I can spin round parts in it and hold scrapers, abrasive pads or sandpaper against them. It works especially well on wheel hubs and drums. It saves me a lot of hand sanding. I no longer can sand blast.
This contraption I have shown before. It is a front wheel hub driven by a motor through pulleys. I can clean most of the rust off a Non demountable rim it about 15 minutes. Demountables are a little tricky. Both this and the brake machine turn about 60 RPM's so you aren't likely to get tangled up in them.
Just some tools I have been using this week that have come in handy for me. Maybe there are some others we haven't seen.