The Secure-A-Cord works similarly to the YellowJacket adapter in that it folds your cords back on themselves to relieve tension. But it offers two inherent benefits over the ‘jacket: first, the plug remains exposed so you can disconnect it quickly if the need arises. Second, the plastic will withstand tough pulls, but is designed to break before yanking the outlet from the wall. Oh yeah, it’s also a lot cheaper at around $4.
If you’ve already replaced the worn-out receptacles in your shop but still have trouble with plugs pulling out, these might be worth a look.