1.) A Basic Tool Kit:
• screw driver (with interchangeable flat and phillips head bits in a range of sizes)
• monkey wrench
2.) Measuring Tape
4.) Fabri-tac (I prefer this to a glue gun for most craft projects because it isn't as messy, has a much stronger hold, binds almost every type of material including wood and glass, and requires very little storage space.) You can find it at any craft store.
5.) Heavy Duty Staple Gun
6.) Hand Saw and Mitre box (if you have storage space to spare, a power miter saw is worth the investment, but for the occasional small project that requires angle cuts, these will do the trick)
7.) Scissors (a good, heavy, sharp, fabric-cutting pair)
8.) Electric Drill (some may find this unnecessary for a basic DIY set, but if you're like me, and are a) impatient, or b) lacking in upper body strength, this tool is indispensable)
What else would you add to the list?