Install a LoJack system:grin:
Stop it! You're keeling me!
I pretty much keep a very short leash on my tools. If it doesn't fit in my pouch or pocket, it's completely off-limits to others. Hand tools are a different story. I don't mind if someone asks me, "Hey can I use your pliers to loosen up this bolt right here?", as long as it will only take a second, and I get it right back.
The last time I loaned out a hand tools was a brand spanking new pair of Channies. Painters asked to borrow them for their sprayer. They seemed like nice enough guys, so I let them. End of the day.... no pliers. So I start walking the site, and find their job box with their sprayer chained to it. And my pliers..... laying on the floor..... taking a nice rust bath in ?" of water.
The next day,the first thing that happens is the painters ask for my channies again. I hand them my 2-day-old rusty pair, along with the receipt, and tell them they just bought themselves a pair.