Couldn't quite turn in anymore collections (the juicer was being stingy again), so in the end I came up short and couldn't get the Rainbow Koi Wind Sock.
Final tally from 16 collections: 4 Rainbow Wind Spinners, 1 Rainbow Lantern, 3 Rainbow Arches, 3 Pegasus Topiary, 1 Peacock Statue, 1 Rainbow Bush, 2 Rainbow Springs. Oh, and 1 Blue Unicorn.
Suggestions and Feedback to follow later.