Chris, have you considered offering other HFU gear through Zazzle? A color inverse of the HFU logo and URL on a black ball-cap or perhaps a tote bag for our portable radios might be interesting.
IOW, I do not drink coffee or hot tea. ;p
BTW, no big deal if it is too much effort for likely very little return. Just an inquiry. Regardless, I do try to remember to send a few dollars via the PayPal donation link every few months.