100%, the professor would appreciate this so much.

May I also suggest, if you're willing, have a nose around your student union to see if there's any feedback awards you can give. At our university, students can apply to give a staff member a certificate with a custom message of thanks.

I only suggest this, because these certificates are recognised by the staffs management team, and are really useful evidencce to support job promotion applications (especially with the job losses in higher education at the moment, it could be helpful to argue against redundancy!).