Tires...no problem. Obvious or otherwise.
At least not around here. Tire shops are more than glad to give them away to whatever wants 'em. Then they don't have to dispose of them themselves. Probably that way everywhere. Except maybe in communist ruled states were they might be afraid they would annoy a speckled smelt or some such critter. Seriously, I can get enough free tires to supply you, me and all our friends.
Also, what is HESCO? I've not heard about that. Mav, Dil, have y'all used it/them? An what was your experience? Easy, difficult?