needle nose pliers (bent & straight), allen head drivers, stubby ratchet. That kind of stuff - things that let you work in limited space or limited range of motion. To me every new thing I do on the Z is first about figuring out what tools work and then what I would use to make it easier. Usually the 2nd time I do something I rethink the approach and see if there is a different way to solve the problem. Just takes time and attention.