Where can I look for the gear Ben Thornewill uses?

Find and submit the pianos, keyboards, synths, microphones, and other instruments used by Ben Thornewill.

If the artist is active on social media, check places like their Instagram feed and look for musical equipment they can be seen using.

You should also do a Google image search for things like "Ben Thornewill studio" and "Ben Thornewill live" and spot gear that way.