I received the following as a submission:

I got a ‘store bought’ packer and like you felt it was a waste of money. I started experimenting and making these. I drop them into my boxer briefs that I have modified to hold them. I buy just regular old WalMart brand boxer briefs (frugal) and sew around the fly area to make an enclosed pouch of it. I left a small opening in the fly to put the packer in and out. It looks so good that I am totally confident stripping down to just my underwear around any other man, even the guys in the locker room that know I’m trans. I did a lot of visual research (checking out the competition) online of bio-men (biological men) in underwear and mine passes for theirs. It has a soft, bouncy look and feels incredibly comfortable. Frugal frugal frugal. Since it never touches my body directly (it’s inside the pouch) I only make a new nylon cover very seldom. I also have made different sizes for various reasons. Pretty much a drop it in and forget it thing and it looks good in underwear, pants, sweatpants and shorts. For my boxer style swim suit I have one that hangs off a harness inside the suit. Simple, comfortable and for me frugal.