I bought one of these from HF 10 or 15 years ago.
https://www.harborfreight.com/grease...ase-95575.html It's still being used, hangs in the pole barn all winter and never seems to stop doing what I bought it to do.. Total cost back then: Around $6. Now they're all the way up to $9.99. With the occasional 20% off coupon, cost is about what I paid way back when.