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.

Electronic lockers are perfect for shared and permanent use. Great for use by school students, gym attendants and office employees. Steel lockers are made with a 24 gauge steel body and 16 gauge steel locker doors; Six Tier Lockers feature 18 gauge doors. Doors are louvered for ventilation and secured using continuous piano hinges. Electronic keypad is user programmable and can be programmed by management for permanent use. Lock is battery operated using 2 AAA batteries (not included) for up to 10,000 uses. LED indicator lights for low battery, occupied locker and valid data entry. Uses 8-digit master codes and 4-digit user codes for operation. Storage lockers include a hidden button for password programming. 6 H legs provide convenient clearance space. Putty finish. Single Tier Lockers include a top shelf for added storage. Single & Double Tier Lockers include one double and two single prong coat hooks. Triple Tier Lockers include a double prong hook. Easy assembly. 2 Year Limited Warranty.

In my experience, most facilities give you 48 hours to have the unit cleared out and left in a “broom clean” condition (i.e. swept out). If you don’t get your stuff out, of if you choose to cherry pick a few items and leave the rest, then the facility can reclaim the locker and it would most likely be auctioned off again. You’d also most likely be banned from participating in future auctions held at that facility, or run by the auction house you dealt with. Lockers Denver Colorado