For longer term storage, there are many self storage units around the metro area. Not cheap, but then neither is paying extra baggage fees and lugging around extra stuff not needed for another leg of your trip, as it sounds like Terry might be doing. For example, I found "Downtown Denver Self Storage" with units starting at $45 a month. http://www.downtowndenverstorage.com/
Division 10 — Specialties Lockers: Division 10 — Specialties is a category within the National Master Specification (NMS) set of guidelines developed by Public Works and Government Services Canada. Division 10 — Specialties items that could be required within a locker room (to meet commercial building and construction regulations) are lockers, washroom accessories, toilet compartments, and toilet partitions. Lockers are constructed of two sides: a back, top and a bottom. Different types of materials are used in locker manufacturing, offering a wide variety of metal lockers, stainless steel lockers, solid plastic lockers, solid phenolic lockers, and custom lockers. A padlock is the most common way to lock a locker; however, you can also use a keyed cylinder lock, built in combination locks or keypad locks. There are a lot of optional extras that can be utilized for lockers, for example: bases, sloping tops, end panels, customized shelves and hooks as well as the locking method (coin-operated lockers are another option). The environment is the best way to distinguish what type of locker will be required for which type of space. For example, if you are putting gym lockers into a humid area, or anywhere close to showers, stainless steel or solid plastic lockers would be most suitable because they are moisture-resistant and rust-resistant. Wood lockers would not be appropriate for this type of environment because the moisture from the humidity would rot the wood.
Number of locking points: Locker doors may lock with either single- or three-point locking, but this is not normally chosen as a separate option, and the choice is usually dependent on the number of tiers in the lockers, or whether they are a high-security model, although some manufacturers do allow purchasers to specifically choose an option here that goes against their normal practice. Single-point locking locks the door at only the point where the latch engages with the door-frame, whereas three-point locking uses extensible steel rods to lock the top and bottom of the door as well.
Public lockers are available on all floors of the Anderson Academic Commons for short-term storage needs. Lockers are available on a first-come, first-served basis. To use a locker, enter a 4-digit personalized code for locking and unlocking. Directions for setting the 4-digit code are located inside each locker. Lockers unlock automatically after 24 hours.
There is a luggage storage service a short one minute walk from Union Station in downtown Denver - LUGDEN. You can make a reservation online - lugden.com, call - (303) 747-5600, or show up as a walk-in. They offer hourly, day, overnight and weekly bag storage. Great place to store your luggage if you're on a layover from Denver International Airport, or going to a concert, or headed to a Rockies game at Coors field and want to enjoy yourself without having to lug your bags around.