Today I realized that I have many computers that are stored in too many 
location around the house.
I pick up many laptops and computers from around the place, but I have 
just hit the point of realizing "I can't actually use all this...."
So unless somebody knows how I can use all these and turn it into a 
beowolf cluster or something:

What do you guys like to do with old hardware, some of which isn't easily made into Linux (mostly laptops)?