I do. In fact, I have two favorites. Both of these items are used a lot when I sew.
First up is the Mini Dust-It:
This is such a wonderful item to have near your machine. Cleans up all the dust in an instant. Mine is not nearly as nice looking as the ones in the picture because they do need to be shampooed occasionally and mine is in need right now.
The second item is Double-Sided Adhesive Tape:
This wonderful little item helps hold things in place, you can sew through it without gumming up your needle, and it washes out. What more could you ask for? I use it for zippers a lot. Think about your topstitching. It the item is placed exactly where you want it with the tape your stitching will look great. No more pins!
So, what is your favorite notion to sew with?