Sorry if repost - searched forum. Also not a real exploit. So simple but even if just 1 person reads this who wasn't already doing this - they will be super stoked.
I just now started making level 1 alts in extra character slots, walking them to town, and storing items in their inventory. It's so simple it has to be repost, or too common sense, but I'm stupid and just figured this out now, and don't see it posted or talked about anywhere. Gaining 6 alt inventories worth of bank space blew my mind. To the dumbest 1% of you who aren't doing this...like me...enjoy!