As an experiment, we spent 15 minutes separating all of the bricks into colour families and settled on a couple of colours each, then had a discussion about what they reminded us of. The results are as follows!
Black, grey and red: Star Wars Imperial vehicles. This is a hybrid: the AT-X-Wing with lasers and a prison door at the back.
Green and brown: Yoda's Hut with foliage to conceal a secret entrance, and diving board to dive into the swamps of Dagobah...
Green & brown: Temple Forest with collapsing bridge and .. a lampshade.
Blue, white and grey: Secret Space Station, with two doors to two dimensions!
Hot colours and pinks: Flowers on the Sun!
Blue, white and black: Temple Cable Car!