I have a lovely chop stick with a pony bead glued to one end, I use it for poking out corners and the bead is colorful so I don't loose it.
I use a rubber mallet for seams, it used to be used for leather seams.
I use a wall paper brayer to smoth out small seams so I don't have to get up and go to the ironing board every few minutes.
I use old prescription bottles for old pins, needles, blades of all types. I put them in the bottles for disposal. I would hate for someone to get stuck or cut by some of my quilting supplies.
Those heavy plastic bags that sheets and linens come in they make great project holders. I put fabric, embellishments and anything else pertaining to the project in the bag with the pattern on top so I can see what the project is. (If I don't by the time I get around to it in 5, 10, or 20 years, I will not be able to remember what it's all for.)
I use those colorful wine holders for storing tall things. I have one for knitting needles, A few for stablizers, I have old plastic bags in some, you get the picture.
I get the old product holders at the Dollar General store, they are shaped just like magazine holders, and I cover them with contact paper, one Quilt magazine holder. Free.
Can't think of anymore right now.