I have a massive roll-away tool box with over $10 000 in tools. (Which is 3 sets of Snap-On sockets..)
RFID for my tool box won't work, but what I do is neatly lay out tools in my box for a quick 'tool check' at the end of the day. If you're familiar with what tools you have and where they're supposed to be, it's easy to pick out a missing tool at a glance.
All of our shop tools have RFID and sit in a tool crib. Torque wrenches, specialty sockets and holding tools, etc.