Before the bathmates were on the market (I think) I was using a novella candle glass tube in the shower. It allowed for strong suction if I pulled on it, and continuous suction if I let it hang while washing my hair and face.
I’d just fill it with warm water and push the erect penis into it to force as much water as possible out to create suction.
Sometimes I needed to sand off the sharp edges in a new novella candle glass to make it use-able.
And yes, they break if you drop them. But I never broke one in the shower or while using it. They tend to get knocked off counters when you’re drying off.
If you have good suction, it hangs just like a bathmate.
I bet you could find something plastic of similar dimensions to eliminate the breakage risk. Maybe some plastic bottle? You could just use a penis pumping tube that seals when the tube is removed. I tried that a few times, but don’t want to clog the self closing adapter with soap scum.
A bathmate is one of the few enlargement devices I haven’t bought before. I’m sure they have some efficacy, I just don’t find doing PE in the shower to be preferable. Either it gets too cold from having the water not running continuously, or the chlorine vapors from running the water too long makes my eyes burn.
Starting: 7"bplx5.2" 2017 (shrunk from disuse)(originally 8"bplx4.5", gained to 9"bplx6")
Current: 9.0"bplx6.125" 2020
Goal: 11.5"bplx7" 2021.