While their are electronic devices one can attach to one’s keys to make them easier to find, this would be better, both because the sonic location function would automatically and intelligently activate as soon as misplaced, rather than when you realize they are misplaced and for the stress relief effects. If one gets a sturdy enough Earth Pony model, or talented enough Unicorn they might even be able to work your cell-phone to call 911 in an emergency. The ability to be sat on while in a back pocket without causing them discomfort means that even a severe fall by an elderly human should only stun them momentarily.
Also, once it is determined if this is Badum Squish’s (sp?) work, either he needs to be created by an artist tag, or the tag that is along the lines of “I can’t believe it’s not Badum Squish” should be added.
Edited