We reuse our plastic bags ... the ones from Walmart & Kroger.
Most often, we empty our bathroom trash cans into them ...
& I also use them to line a small trash can that I keep in the pantry for
our recycle items.
A simple storage solution is to reuse a plastic milk jug.
After emptying it, wash & dry it out.
Cut a hole in the front where it's slightly indented.
Stuff it full of plastic bags.
It holds way more than you'd think.
I keep one in each bathroom & in the kitchen pantry for an easy, frugal