I made this stitch marker as a way to help me keep track of where I am in a complicated pattern. It is compact but easy to adjust as the pattern changes so that I can remind myself of what comes next. 

I set it up to have the five stitches that I use most, but it could be adjusted to have other symbols for your favorite pattern. The shared dial has knit (k), purl (p), slip slip knit (ssk), knit two together (k2t), and yarn over (yo). But this can be changed to your desired stitches!

Printing directions: Can be printed without supports or brims. I have printed it successfully with a 0.2 mm layer height in both PLA and PETG. The back is tough to get on but putting it flat on the edge of a table can help get the leverage to pop it into place. Then is it is securely and permanently attached.