We will have a few hours in Las Vegas between checkout and our flight home. We aren’t staying in Las Vegas our last night so leaving at the hotel isn’t an option. Wondering if anyone has a luggage storage shop to recommend. TIA

In the trunk of your rental car? Turn in the rental car 1-2 hours before your flight out and take the shuttle from the rental center to the airport. If you have the time, take a short day trip out to Hoover Dam.

You don't mention a car -- are you driving to LV or are you on a tour? If you have a car, then do as tom suggests. Otherwise - if it is a tour -- I assume they are dropping you at LAS. Many airlines let you check your bags in hours before the flight time -- check with your airline re their rules. If that isn't an option, I've left my bag twice at Vegas hotels after checking out and neither time did they ask for my room number. (not sure if that is the case at every hotel)

If you can't check your bags with your airline, there are several vendors offering baggage storage services in multiple locations. Just google.