I specifically say hobby level, because I think these work well at tradeshows. If it looks too "consumer," then people could/would be turned off because it feels more like a sales pitch.
If it's just simple spare change (maybe you even have some at your booth), I think it resonates better.
I feel like a hobby level machine like this would do the job:
https://shop.lnbits.com/product/lnbits-bitcoin-atm-fossa
I specifically say hobby level, because I think these work well at tradeshows. If it looks too "consumer," then people could/would be turned off because it feels more like a sales pitch.
If it's just simple spare change (maybe you even have some at your booth), I think it resonates better.