If your store has ship from store, it may be worthwhile to ask about getting trained for that. That's one of the more isolated positions in the store and if your store is anything like mine right now, they'll definitely be looking for TMs for SFS during Q4. Essentially you fill one of two roles. Picking, which is running around the store looking for specific items, and packing preparing those items for shipping. If you're picking and on the floor, you're expected to help guests that require it, but not actively seek guests. If you're packing, you're tucked away in the back and usually rocking out.
Really not a bad gig.