[App_rpt-users] Simple node

All, I think I know the answer to this, but figured I'd check again. Yes I know I could do an RTCM (I have 5 of them already). I'm looking to get another family member (new ham) up with a personal node. Was hoping that someone might have done something around the Beagle Bone as the Pi seems to no be up for the task. I could live with simpleusb if needed. Are there any *inexpensive* options to get to a functional simpleusb type node? If so, what are they? Thanks in advance, Alan