Use a motor and stick a capsule on the motor. Connect to a power bit along with a bargraph.
connect servo to a power bit and attach a sign.
Cut a circular hole in the middle of a box. This is where the pringles can or any cylinder will go. Cut a hole that will fit your capsule size in the pringles can(or water bottle, empty toilet paper roll, etc.) and insert it into the hole on the box. Make a platform for the capsules to rest and make sure to cut holes to reload the capsules and also take them out.