I agree, HARD to choose just one. My favorites are my Quilters Rule rulers, I have them in all sizes and I grab them more than any others I use. I love that I never worry about it slipping. I also love my heart shaped clover markers (I have pink and yellow). The other thing I adore is my slanted wooden ruler holder. Its hanging on a piece of pegboard near my work space and I keep most of my rulers just an arms length away.

Show me a picture of it!!!!

My ott lamp
My Kai serrated thread clips
My Salem rulers, they have really thin lines

I love my shape cut rulers, but I have a friend that is going to demo her accuquilt and try to convert me.

My Martelli binding tools, my awl, kay buckley scissors, and martelli and true cut rotary cutters.

I found some that are heat resistant, and like those for pressing pinned areas. Happened to find the regular and the heat resistant at the same online site, so realized some are not--and what's the point of having nice out-of-the-way heads if they're not heat resistant?

As for other favorites not mentioned yet, I depend on a handy tweezers for so many things, and love my Machingers gloves for free motion quilting. Tried several others first, because of the price of the Machingers, but all was wasted by comparison.

I have been using the blue glass head pins I get at JoAnns. I have found them to be the sharpest..even better than the flower or button head pins. You can iron on them as well..and my favorite color is blue!

This is easy. A sharp rotary blade. I change it often.!!!!!

12 inch block with 100!!!!! pieces!!! Oh my! I thought 9 pieces was a lot. LOL

Mine are the slide lock and Elmer's school glue.