To the OP.......Man you are just too damn trusting. Way too trusting.
The guys I worked with at work I considered friends. Most of them I trained to be a machinist. When I brought my box home, I found out that there was about 30-50 things missing. I made a list and have it around somewhere. Someone picked the lock and removed the items. I have a good idea who did it and who has the tools. But to prove it, I'd have to have access to the shop, which once you are out of there, there is no going back in.
I have a lockbox mounted on the outside of my garage that has a key to the garage, house, and shed. It's heavy duty and has pushbutton code to get into it. So if we are locked out of the house, or if per chance we would happen to be gone and needed someone to check on something, we can make a phone call and give them the code.
But as far as someone coming in and borrowing something without telling me, that ain't happenin'. I would never ever consider going into someones garage without talking to them in person. And if I did go into the garage WITH their permission, I sure as hell wouldn't be taking someone else in with me. Like I said above, even the ones you consider friends will be the first ones to **** you over.
And to borrow a rake?

Tell them to get in the car and buy their own damn rake!!!! I;d be embarrassed to even ask someone to borrow a rake. The days of Herb Woodley and Dagwood Bumstead don't work today.
This is the type I have (Supra). And it is fairly heavy built.