Suggestion #2828

Xp Booster

Could you guys make the Xp booster from voting be in some sort of book or make a way so we can use a certain time of it when we want without having to use all of it at once? I would like to be able to mine for 20mins with my booster than leave for, lets say 2 hours, and come back and still have the rest of my booster. This would be amazing