Painless Fuse blocks

I clip and cap them off about 4" from the fuse box. The unused wire gets spooled up and put in a coffee can (the kind with a plastic top) and the can is labeled for the car the extras came from. When I need to add a device back in, I pull the proper wire out of the can and put it in place. If I sell the car, the can goes to the new owner. The new plastic coffee "cans" are really fantastic for this.