MudPie

Toolwise (I'm mentally going thru my tool box):

Bottom Bracket Tool (if you have pic or model, we can suggest proper tool)
Chain Tool (needed to shorten new chain. And needed to reinstall pin, if not using a masterlink type chain)
Cable and Housing Cutters (already mentioned, makes clean cuts)
Crank Extractor (maybe, depending on type of crank, post pic or model)
Headset wrenches (probably not since you probably have thread-less head set).
Pedal wrench (probably not if you are transferring crank with pedal, but good to have for the future)
Cassette lockring removal tool (probably not if you are using the old wheelset, but good to have for the future).