Israel’s GetPixie has developed the Location of Things (LoT) platform and produced Pixie points that you stick to your valued objects (keys, wallet, sunglasses etc.) Use your smartphone to find them anytime. Pixie can even alert you if you leave the house without them.
https://www.getpixie.com/what-you-get/ https://www.youtube.com/watch?v=3hXfZNL9Zq4