I just bought The Gypsy Cutting Gizmo on Amazon for $17.99 as a gift for my BQF (I hope she likes it)!
For myself, I ordered acid free tissue paper for storing quilts (something I've gone without till now).
Another good investment is quality scissors (depending on what you don't have).
Miracle Fabric Sheets through C. Jenkins are great for making labels and photo quilts.
Quilt racks or wall quilt hangers.