Watch out for the sidewinder. If you have a Viking Machine, as I do, the bobbins don't fit! Great little tool if you can use it!
Favorite tools- 60mm Olfa rotary cutter. Cuts through more layers of fabric than the 45,12.5 inch square up ruler, 4X14 ruler
I just got the Fons and Porter 1/4 inch seam markers and the Eleanor Burns flying geese tool. Both are pretty cool! I am making a quilt with a flying geese border and both are pretty handy