Are your students making silly mistakes when it comes to typing? One way that has helped in my classroom is having them work on digital editing. I have my students complete these weekly formatting/grammar fix its by assigning it on Google Classroom. Not only will it help with grammar, but it will help your students become aware of reading their writing before turning it is as there is more to it than just a simple click of spell check.
This is a digital product so you will need to make a copy on Google Drive