I don’t want to say how often I misplace our TV remote. Smartfinder 4-in-1 can help. Attach one of four color-coded, adhesive-backed receivers to something, then hold down the correspondingly colored button on the RF transmitter to trigger an audible alarm on that receiver. Also includes a suction hook to attach the transmitter to a fridge or other location that you can actually remember. Currently $34.95 (regularly $39.95) at Convenient Gadgets & Gifts, but a Google search also located it at other online retailers.
Some of our links in posts like this one are affiliate links, which means that we may receive a small commission on purchases at no cost to you.