--Firearm accessories...like slings, bi-pods, grips, rails, m-lok stuff, magpul flip-up sights, etc.
--bulk ammo...22lr, 7.62x39, 12GA slugs, buckshot, just general ammo that people shoot a lot
--and then maybe some stuff for the reloaders, so .224 cal bullets, 30 cal bullets, powder, primer, consumables that reloaders eat through in a hurry
I couldn't tell you the times I go into a store for reloading supplies, grab what I need, and then wander down the isles thinking about what accessories I'd kind of want/don't really need...