MolenaarI am now officially a metro nerd. I 3D printed a #knittingloom in the exact dimensions of a circular knitting machine, so I can do the fast and easy parts on the machine and the difficult parts on the loom. Switching between them is done by knitting an extra piece of waste yarn, which is pulled off after the switch.
The loom is easy to carry around so I really do the heels in the metro when I am going to the office.
If you want to print one yourself, look at https://www.thingiverse.com/thing:6642683 .
Maru