I have this problem! Especially with keys! I'm pretty good now at putting them in my purse, and my purse on the table by the door to the garage. We do have a key hanger by the door, but we don't always take my car and my keys to the office are on there too
But I always remember my purse.
I lose my cell phone a lot around the house, but luckily it's just a phone call away!
I couldn't find my mp3 player for the past week, and this morning I realized it's on the bathroom counter! Lol.
I know how you feel! I saw a thing in a catalogue a few years ago, where you could attach a little pagers to things you lose a lot, and then there's a main station where you can press the button of whatever you lose and it would start beeping
I really considered getting one!