I have some wooden shoes, will they do ?
EDIT
As this disappointingly seems to have gone through to slips:
https://en.wikipedia.org/wiki/Sabot_(shoe)
https://en.wikipedia.org/wiki/Sabotage#Etymology
"An alleged etymology [of sabotage] describes the actions of disgruntled workers who willfully damaged workplace machinery by throwing their sabots into the works"
Into looms...