Tools, particularly watchmakers tools and spend ages working out how they were used, as there are some pretty weird tools used in that trade and they are collectable, so a collection made has a value. Hey with such tools one could even get into watch and clock making or at least repairing, clockwork mechanisms and the beauty there within.
I am still glowing in victory from winning an old watchmaker's /Jewellers drill on ebay last night, the type that takes square shank spade bits for £10.30 posted and it has a selection of square shank bits with it, so bonus, I can use it straight away as I buy tools to use. The last few of these I was watching went for £60 and there abouts and in the US $125. But with my ideas of getting back into the craft market scene, I hope to be making as well as selling on site, but making using ancient tools designs, bow/pump drills, blowpipe hard soldering etc as I know that kind of stuff draws attention to saleable products through well, it's not seen in the western world these days, so is wachable. Yeah sure I have an electric pendant drill, various electric grinders and cutters and bottled gas heating equipment, but there is nothing like using hand tools people would have used thousands of years ago, like treadle powered lathes and fret saws. But in craft fair venues where fire is forbidden,usually inside venues I will have to go modern and build an induction forge for heating metal to workable temperatures as my craft is rather useless without the ability to heat metal.