Tools are like books and vinyl records, you lend them out or borrow them and they all too easily never return home. No malice is intended but those things just like to play the field. So extra care advised.

Nevertheless, I'll mention a few items in the Boston metro-west area. Stronglight, TA, and "regular" crank puller, modern splined Shimano BB socket, various FW pullers, conventional headset wrench (32mm/36?mm), various hex wrenches including the uncommon 7mm. Several torque wrenches. Uncommon 16mm and 18mm open/closed-end spanners, useful for Campy hubs but not so much for the cars I've worked on. None of these items is especially expensive but when you need one and don't have it, you don't have what you need.