Non-sequitur, I know. Hear me out. I design and 3D print designs that help me with yarn crafts.
Here's a short list:
Fleur de lucet
Stitch markers
Storage
I-cord maker using machine latch hooks
Bobbins
Granny square blocking board
A bobbin holder
not pictured:
A skein stand
A travel yarn cake holder
Darning needles
Giant crochet hooks (require sanding)
Frames for crochet mandalas and earrings
Accessories for macrame
Random thought. Any suggestions for what I should work on next?