I have been working on a few ham radio offerings that I could take to local conferences.
An analog repeater built off a GR1225 running on the 70cm band with 35watts of power. Maybe connected to All-Star/Echolink.
A digital repeater running from a CDR750 with a Pi-Star Raspi Pi3 and a MMDVM. I intend to offer DMR & D-Star modes.
A Gotenna Mesh modded with enhanced antenna with better gain than the stock fractial antenna.
A 2M APRS node.