one time me and 4 friends went to a concert like 45 minutes away, so we rolled a blunt for the way there and the way back. We smoked one of the blunts on the way there, then right after the show my buddies holdin the blunt gettin ready to light it and he has to go piss real quick. So he goes piss and like 5 minutes later I'm like hey light that blunt man! He looks all over for it and realizes it was on his lap when he got out and it fell somewhere in the random place on the side of the road he went piss. Needless to say I was furious!!!!
other than people taking it if I lose it I usually find it within the day. Probably because if I don't know where it is I'm about to go on a manhunt for that shit!
Also I just had an idea. What if you trained your dog to search out the smell of weed so he could find your bag. But not only that, you teach him all kinds of other smells and you attach that smell to an object like a smelly thing on the remote control, your telephone, keys...you'd never lose anything!