The space case crystal catcher grinder is undoubtably the daddy of all grinders.
Here's why.
With most normal grinders, you put in your choice of legal herbs, grind them up, then what? You have to find something or somewhere to put the ground material before its rolled up. With the space case, the top section grinds, when small enough the ground material falls into the middle. Simply unscrew the top and its waiting for you. If you've ground too much, just leave it in there.
Also, most grinders get clogged up with sticky stuff after they've been in use a while. Well with the space case the sticky resin crystals fall to the bottom, through a very fine mesh and get collected. Once you've collected up enough you can compress the crystals into the most potent, sticky pollen imaginable.