Fake Bulges between sessions?

Hey y’all, seasoned scrotum infuser here. I was just wondering if anyone has anything they use to get the big bulge look between infusions? I used to fill latex gloves with water, tie them off, and pack them into some underwear to get the look, weight, and “squish” of a saline infusion when I didn’t have the supplies on hand or didn’t have time to wait for it to absorb. I’d like something along these lines that is much less likely to pop so I could wear it out in public without fear of looking as if I spontaneously wet myself should it rupture. Any ideas? Needs to be heavy and squishy so don’t recommend a pair of socks please.