I would like to Suggest having Variable / Custom Time Slots. Since I couldnt find another Office Tool to do this with, I use Bookings, to make it easier for my Co-Workers to Book Company Vehicles. Since the Time varies between 1 Hour and 5 Days, it would be Great to have it variable. If you were to book 1 Day, you would have to Book for Tomorrow since the day today already started. But if you need it today as well, you would have to book for 6 Hours, then 3 Hours, and then 1 Hour to fill up the time so noone else takes the Vehicle. So that is my Suggestion.