Weaving in winter, even wearing socks, my feet can get a little chilly. Besides that, the treadles can start feeling a bit hard on the soles of my feet on longer treadling sessions.
Wearing my warm fuzzy slippers or regular shoes won't work; they don't fit between treadles and I'll push down more than one.
So look what my Secret Santa sent me this year! These are driving moccasins. They are narrow and have some traction bumps added on the sole. They help keep my feet warm and protect them from the hard treadles. I woudn't walk any distance in these, but I can pad around in the house between weaving sessions. I think probably any mocs would work great; they wouldn't have to be the sort meant for driving.