Rulers, both quilting rulers, and cutting rulers - seems I'm always adding to them
Bobbins, have over 150 - I have 50 wound of the thread color before starting a quilt
Fabric - have a good stash, but only for planned quilts
Fabric - have a smaller stash for small projects
Thread - use three basic colors - Antique (ecru like shade), Black, Prussia blue but have a good stash of large cones of each
other notions - good supply of rotary blades, multi scissors, seam rippers, one handed snippers, awls, and other notions
Block Pattern books, and other pattern books
I'm pretty much always adding to the above as I use them/need them