Created a simple little cap for the basket leg of my Vevor ultrasonic cleaner after it arrived with one missing. Maybe it'll fit other baskets/brands.

Cap is 6 mm x 11 mm, hole diameter is 3.5 mm.

Its snug enough it doesn't slip off and matches the height of the original caps. Printed in PETG, maybe will try one with TPU to make it a bit more rubber like.