What are the tools you use that nobody would expect you use? I'm looking for the things that were unpopular and underhyped, or things you use in unexpected ways, such as Absynth for leads.
For me, RMV is one of those. I primarily use it with a kit I got from Wizoo, which sounds great for its small size. It also contains an industrial kit consisting of hits on pipes, ventilation ducts, etc. which I use as percussion from time to time.
Another example is that from time to time I might use something like the Roland GrooveSynth. It's one of those synths that will always sound dated but never vintage. Sometimes it works for the cheese factor and sometimes it works in spite of itself. It doesn't get regular rotation, but sometimes there is a place for it.
I still like to use sounds from Dimension and Rapture, as well as Triangle II and Pentagon I from time to time. They may not be the cool kids anymore, but still fun.