The "rent the cheapest car possible and just leave your luggage in the trunk" is an interesting idea. Admittedly, I have not tried this, but if you are a premium hotel's frequent stay program (gold, platinum, or whatever their levels are these days) you might try leaving your luggage with the bellman at a nicer hotel. They generally will hold it if you arrive prior to your check-in time or you're hanging around after your check-out time ... but if you asked (and added a big tip) they might hold your luggage even if you're not staying there.
With traditional package delivery, staff members typically spend a lot of time logging and organizing deliveries. These packages end up taking up valuable floor space and could remain there for a long time if a recipient forgets to pick it up or can't retrieve it during regular office hours. If packages are delivered to the recipient's door, there is the risk of the package being stolen or lost. Most residents would undoubtedly prefer a delivery system with tracking and security measures to keep their items visible at all times even if they're away from home. Lastly, it can be difficult to impossible to store perishable items that need to be refrigerated until the recipient can pick them up. But with meal kit and grocery delivery, this need is only going to increase.
Perforated lockers are similar to the standard types of locker, but the door and walls are made largely or entirely of perforated steel, with hundreds of holes creating a strong mesh arranged in a diagonal pattern. This is used where good ventilation is required, or where, for security reasons, it is necessary that the contents can be examined visually while the doors are locked.
Lockers are usually physically joined together side by side in banks, and are commonly made from steel, although wood, laminate, and plastic are other materials sometimes found. Steel lockers which are banked together share side walls, and are constructed by starting with a complete locker; further lockers may then be adding by constructing the floor, roof, rear wall, door, and just one extra side wall, the existing side wall of the previous locker serving as the other side wall of the new one. The walls, floors, and roof of lockers may be either riveted together (the more traditional method) or, more recently, welded together.