I was very fortunate to have a tech at my first real shop, (before I had so much as a decent set of sockets, I had worked in building maintenance before that and had all different kinds of tools than what I needed) who had the "Mi casa es su casa" approach. Granted it was only me and him in the shop as it was a small, two bay, in-house fleet maintenance kind of deal, but still, he had worked in shops before that and had well over $15,000-$20,000 in tools, not counting the box. Now I'm around $10,000 in and just getting started and I really appreciate what he did for me, he never even locked his box on his days off so that I would still be able to work. I wouldn't even think of leaving my box unlocked at work, even if I'm coming in the next morning. I have to borrow some of the lead tech's tools every now and then, but I'm very good about getting them back to him in the same or better condition and I've been buying everything I borrow within reason whenever the candy man comes around.