Both the CG50 and nspire has working Numworks ports (although very slow), if you wanted something more fancy on the same hardware.
https://github.com/UpsilonNumworks/Upsilon https://github.com/UpsilonNumworks/Upsilon/issues/327
https://github.com/UpsilonNumworks/Upsilon https://github.com/UpsilonNumworks/Upsilon/issues/327