look at www.dronekits.us with wood airframes reeeeeeal cool and CHEAP
These wooden airframe kits are a good flight platform for people wanting to tinker w/ APM:Copter, DRONECODE, TOWER, PIXHAWK, NAZE, etc. Then consider www.vernier.com and their coooool interfaces, probes and sensors for use with UAVS, UWVS, UUWVS ( OpemROV ), and UGVS.
Ron Sindric commented
Silly question ----> what kind of props ( size, pitch ) would you need to fly a Multirotor UAV in the atmosphere of Mars ?