A smart plug is a pretty handy gadget, but for a while, they were touted as a device you could add to anything to turn it smart. That's true to a certain degree; you can use a smart plug to add instant power control to any outlet, letting you turn it on and off at your command from anywhere in your home (or even when you aren't there). The TV can now turn off on command, the lights will automatically flip on at 5 pm, and a simple coffee maker or appliance can essentially run itself if all it needs is power. If you're looking to control something simple that only needs power sent to it, then we've found some of the best smart plugs to do that for you. TP-Link's smart plugs have been my favorite for years, and the TP-Link Tapo Matter-Certified Smart Plug Mini (P125M) ($25, 3-pack) lets you connect it to your home hub of choice using the Matter protocol. Smart plugs are also great for outdoor use; the  Cync Outdoor Smart Plug ($17)  is designed for this purpose and includes two built-in outlets.…