This 65 piece ratcheting screwdriver set is a bit nicer than comparable offerings from Dealextreme and includes bits for many of the obscure screws you are likely to encounter when disassembling all sorts of electronic equipment and devices.
I’ve used the Bus Pirate to troubleshoot tricky I2C bus problems and to develop automated testing of complex touchscreen control electronics. This is a small fraction of its capabilities. This is a handy item to have in your electronics toolbox. Has Python support!
These SMD prototyping shields from Elecfreaks are pretty useful for building and testing discrete circuits made with mostly 2 and 3-terminal surface mount devices. I’ve used them quite a bit over the past year to prototype power supply and switching circuits (mostly SOT-23s). I like to cut them into small pieces with a large metal shear and stick them to larger PCBs (the ones I’m testing/modifying) with thick double-stick foam tape.