The Expo hunt runs across all the 10 Hope sims, and there is no particular order. Hunt gifts cost 10L each, with 100% donation to RFL.
Exhibitors who take part in the hunt will have a 3D Expo logo placed next to their store sign. The hunt object is also a 3D Expo logo, hidden somewhere inside their display. Some displays are a mere 10*10 meters, others cover up to half a sim.
You can find hunt hints here and some of the hunt gifts below. This gallery may be updated.