Im a mobile guy and i do not have a thermal printer to carry around that i can print receipts off with. i do not know if its already done or anything but i think having the option to have that for the mobile techs will be awesome.
Something alone this line is what I'm asking for.

https://www.amazon.com/Meihengtong-Handheld-Bluetooth-Rechargeable-Compatible/dp/B07R39G4WZ/ref=sr_1_3?dchild=1&keywords=milestone+bluetooth+printer&qid=1604528618&sr=8-3