Used, unwanted crumpled plastic supermarket carrier bags..
Before supermarkets installed charges for carrier bags I & I'm sure many others had a stash of bags within bags of plastic bags..I have used up my stash transporting rotted manure & woodchip, they lasted about 3/4 rounds, before small bits of sticks/stones tore them or the handles gave way.. bin liners tear too easily & rubble bags don't tend to have handles...supermaket carrier bags are so perfect as the load is manageable.. bags for life would topple over & spill the manure in my car when I would take a sharp turn..supermarket carrier bags I can do a loose knot with the handles & contents stay put, I can also stack them ontop of each other like temporary bricks in the boot. My roses are greedy & the clay/chalky/filled with builders rubble soil in my garden really benefits too.
I can collect easily & gratefully