Most of us work on more than one project at a time, and some projects are stuffed in bags and neglected for weeks (okay, maybe even months and years).
pin that identifies crochet hook size
Theresa (Ordinary Lovely) crafted an idea that with a little preparation will end the confusion of determining the size of crochet hook that was used for all those abandoned projects. Perhaps it work for you as well. Click on the link above for step by step directions to how she created these clever reminder pins.
Note: this idea can also be applied to knitting or even quilting to mark rows and/or repeats. Letter beads could be used to indicate rows, charts, etc.