If you have too much paper, too much time on your hands, and too much affection for the old Transformers cartoon to consider yourself entirely sane, take a look at this site:
It’s a site where you can download .PDF files, print them out, and cut, fold and glue the printouts to make Transformers robots. Around 50 are available, plus another dozen or so fan-created robots on a separate page.
The Universe link at the top of the page takes you to the master list of .PDFs.
Note, if you pass the URL on to anyone else, that the “P” in “Paperformers” has to be capitalized — the site is case-sensitive.