If you’re a guy with a sex toy you might realize they are a pain to dry out after cleaning as they tend to close up. The water can then begin to get funky with bacteria, etc. growing in them. Print this and insert into opening to allow the toy to air dry. Suggest printing at .2 mm layer height and 80% infill. If you use ABS the smoothing may help seal the seams, otherwise the silicone spray can help. I suggest also to clean with bleach or other antibacterial solution weekly.
127 mm tall, 37 mm insertable diameter, 76 mm base diameter