Not really applicable to most grinders so I left it out. My grinder is a manual one with three pieces, the top which has the grinder, the bottom jar it screws on to, along with a cap to screw on to the jar to preserve ground coffee when not in use. I store it with the cap on and the top separate. You load the beans into the top part, but the top doesn't have a flat bottom so I would try and balance it and frequently spill the beans when loading it instead of just taking the cap off and screwing it on to the jar and then loading the beans...

I know! Instant coffee!