Just out of curiosity, and because it could produce some interesting replies
Basically, I'm not into lifting odd objects as such, but working at a fruit and veg stall has me hoisting bags and crates of goodies about. Bags of carrots are favourite in the heavy weight department. Least favourite are big, heavy boxes that are stored above (my) head level - which isn't so hard as I'm only 5'5".
Go on then, tell us your secrets!