While Behringer X-Touch mini is already well known and discussed on this forum, as great autopitolot panel due to the 8 encoders, I would also like to bring your attention to the Novation Launchpad Mini which offers 64 square buttons (exactly the number on the CRJ FMS) plus 16 round buttons, 12 of which work very well as the FMS line select keys. No longer mouse needed to enter your flight plan or operate the FMS in flight. Easily available used for 40-50 bucks.
And it doesn’t come from Behringer 
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