Just got this in the mail today. I wear Hollister bags.
https://www.siilostomy.com/en/ostomy-belt/
It's a tad snug, but I didn't worry about falling poop or anything while out today. It does hold my stoma (and surrounding hernia) in tighter to make me look better. Just afraid it'll be so snug my poop won't come out my stoma when it needs to.
Probably won't sleep in it, but will wear it when doing light chores around the house or out in public.