Good luck! Seems from what you said it's basically like putting in a candy machine, when it comes to the shop. Where there are limited installs locally, that can actually bring crypto enthusiasts. Granted, there are online places now days, but I myself have searched out crypto ATM's before. The percentage they take sucks, but it gets you cash in hand. The worst part is that it requires ID.

I don't know if it would bring a lot of business, but it would bring some extra business. People would come in, take out some money, or buy some crypto. Being already in the shop, they are far more likely to buy.

I personally would suggest the head shop carry a few shirts, or some physical coins. Possibly 1 oz silver ones, which are an investment, and kinda cool. That's if it does alright anyway. Such things are hard to find anywhere. Might bring extra business if someone knew they had some crypto merch and could actually buy/sell crypto there. It's a lot less stressful to buy clothing in person than online. You never know if it will fit.