I've seen portable bags/bottles in camo to use for a urinal somewhere, but have no clue where they are. They hang from the treestand....just curious, any help would be aprpeciated.

Use a Gator Aid bottle and hang it to your stand with a nylon cord.

We just use the freezer bags(gallon size)that we had our lunch in ang hang it on a rope.
BILL

Gator-Aid bottle

Yep! That's the only size I can use!

Gator-aid here also