Cone wrenches, BB wrench, crank removal tools, freewheel removal tools, etc. I have been taking my bike to a local bike do it yourself shop when I don't have the tools I need but would like to do more work at home. I can get a lot done at home with the basic handyman tools and some tools I have made such as a headset remover and a tool to reinstall the headset. I end up doing a lot of wheel truing but I think a truing stand would get pretty pricey unless someone has suggestions for ones that aren't a couple hundred dollars.