In an attempt to chip away at my electric bill and reduce my carbon footprint, I've been evaluating what devices have room for efficiency improvement. My tent full of AC fans seemed like the perfect thing to tackle. I use one floor fan and several clip ons and their combined wattage is probably 150-200 watts. That's more than one of my LED panels on full blast. I had a couple rechargeable USB powered DC fans I had bought for other purposes and had been impressed with them, so I got on Amazon and found the cheapest USB powered (no battery) fans available and one 60 watt, 6 port power supply to power all the fans. I've yet to receive the floor fan I ordered, but these Beskar clip ons are seriously impressive for $16. They don't look like they'd move much air, but I swear, they are more than twice as effective as the larger AC fans they replaced, and they use 3 watts on max power. They have tiny little blades that seem to produce a more even and predictable spread. My old fans seemed to only put out air on the edges. Only complaint are short, hard wired cables, but I found a six pack of monoprice extenders for $7 on Amazon. I also replaced my two warm mist humidifiers I use in my home because I found out they draw 400 watts EACH. Yikes. I already use RO water for humidification so the switch to ultrasonic should be smooth. These purchases should pay for themselves over time and they weren't really that much to begin with. Shoulda done this way sooner!