All four rubber feet / leg tip / table foot of an old folding worktable aged and broke/fell off.
Perfect use for Flex TPE filament. Legs are 1 inch square steel tube. I lengthened the amount of 'sleeve' from 13 mm to 23 mm hopefully resulting in a more secure replacement foot. Fit is snug. Foot is beveled diagonally. Longest point goes to outside corners of legs. Same foot for all four legs. Print with base of foot on printbed. If printing with TPE/TPU, recommend one foot at a time (minimize stringing and print time is ~4 hours per foot).
Other material to consider would be PETG.. but the TPE is magnificent.
The table is stable again!