Before this event, I used my own turn-in system. For dumping 20 snowflakes on the ground, I got 20 extra secure storage spaces! For dumping my MIBs, I got an correlating amount of secure spaces. And so on. Before everyone gets so upset about the turn-in rates, remember the alternative is to just throw out the old crap you don't want. Simple. Its the system I've used for years.