Even if you are not synching your districts gradebook with Google Classroom, I would recommend grading everything (even paper assignments) through Google Classroom. Students find it helpful to have all comments and grades in one place.

Once in Google Classroom, you can click on the three bars and choose "To-do". Think of this as a checklist of what you need to grade in the order it needs to be graded in. You can even get ahead in grading since you don't need students to turn in assignments in Google Classroom to score them.

There are many many ways to program Google Forms. You can make an entire form of multiple choice questions or have fill in the blank questions that you can grade yourself. All these responses will populate onto a Google Sheet where you can organize the grades for easy entry into Google Classroom and/or Online grade book.

Late work is easy to manage and organize using Google Forms. I have created a form called a Late Work Ticket. Students are allowed 3 per semester. Students complete the late work then submit a ticket. I have programmed the Google Form to alert me when a late ticket has been submitted so that I know to grade it. I can grade the late work whenever I have time or save the list of work until the end of the term to grade it.

Late work ticket