I agree with the suggestions you have gotten so far. Another consideration is a ruler that I find invaluable (I am a goofy gadget girl) have waaay too many rulers. But there is only one I would fight you for! That is my June taylor shape cut. This tool is so phenomenal!! Takes a little getting used to as your RC fits into slits to cut strips, squares, etc. from 1/2 " and up. This tool comes in 2 sizes and although it is spendy to start with it is (I think) well worth the price. It does not shift on your fabric either.
Also another fun place to go for goodies is: WWW.create for less.com
books patterns, you name it at really good prices!
when you can sve $$ on these things you can spend more on fabric! right piecers? heh heh
SanDee