Also, be sure to check out craftzine.
Pulse Jet Rocket Engines
I haven't checked yet but there are probably a number of places on the Internet to find instructions on how to build a pulse jet rocket. I stumbled onto this Research Media & Cybernetics web site one day with this one about soldering together copper pipe fittings.
While at the BTC Fab Lab last night I saw the new MIG welder that hasn't been uncrated yet. This would be a fun project to build sometime but built properly with steel and welded together.
Events & Activities
HMS Beagle Science Store - voted Coolest Store in Kansas City
Check out these other great Maker Friendly groups:
Local Hackerspace and Makerspace Groups
Regional Hackerspace and Makerspace Groups