I've been getting into landscape collage and am working on large (1m square) pieces containing 20-30 images each. David Hockney calls this "drawing with the camera" - as you have to create space, depth, distance, and time - and so I've been getting out there with my pencils and creating triptcyhs and quadtychs too.
If y'all want to keep in touch on Twitter (I post more there) I'm https://twitter.com/RichardJLMunn