Anyone have any promo ideas for this retro motel key tag?

Hey guys, I own a shop called RetroSupply (www.retrosupply.co) and to celebrate the Halloween season we made these cool retro motel key tags. You can check them out here: https://share.getcloudapp.com/2N... I'm trying to think of the best promo to help increase sales using the tags. So far my thoughts are something like "Spend $100 and get a limited edition RetroSupply motel key tag FREE" Any other ideas that might increase the average cart value or purchase conversion would be cool to hear! Dustin