Popular Science built a rolling outdoor projector, capable of projecting movies onto the side of a building. They built theirs on a beefy stainless steel chassis and used what appear to be fixed 16” lawnmower wheels, but you could probably build the same equipment onto a CycleTote bare trailer if you built some vibration isolation into the mount.
LumenLab offers do-it-yourself kits and replacement parts for the projector.
My daily shooter is Sony a9 II with a vertical grip and various Sigma lenses attached like the 14mm 1.4 Art. Find more recommendations on our store page. As an Amazon Associate I earn from qualifying purchases.