I never saved mine, I had a old cat litter bucket under my saw used it to toss cut outs and scrap into and tossed dull blades in it, when it was full I took it straight outside to the big trash can and dumped it out. I never put mine in a trash bag in the inside trash can.
I can concur there is no other pain than trying to pick up and find a gross of blades that somehow got scattered on the floor, more so on a dark wooden floor, a magnet does help but still a pain.