No space for elitists

We have a small shop. 75' x 23' at the biggest point with 16' ceilings where it is not divided by the upstairs loft. We stuff as much product into our space as a store three times its size. Our mechanics in the main space have about 10 sq ft. in which to turn out profitable labor. Usually there are three wrenches on the floor, an assemble guy upstairs, and on weekdays, our head mechanic has his shop behind the main space. His room is 13' x 13' with a half loft. It's a really neat space with most everything you could want but more room. I really look up to him as he has taught me more than he could possibly think he knows.
Our main complaint you can see is space. It is at a premium. Without additional room, the only solution is consolidation and clearing out junk. Well junk isn't junk, it's stuff we are storing for one reason or another. The main violators are the boss (whose stuff will mostly be ignored) and customers who think we can hold on to their bits and pieces indefinitely. They fall into one category, elitists. A week, a month, no... months and even some years. Some know it is here and feign picking it up regularly and some have no idea it is still here. The time is coming and the stuff will hit the can.