www.itworks3d.com will be releasing the E3D Titan Aero toolheads for LulzBot Mini very soon!
The E3D Titan Aero allows you to print both solid and flexible filaments without changing toolheads.
Upgrade to hardened parts, and you can also print abrasive filaments like Proto Pasta Carbon Fiber PLA
Check out this video of a test print with the  1.75mm filament version: