A lot of these are really great! Here's mine:
1. Get over the procrastination hump. It's really hard to motivate yourself to do something sometimes, so I always say, "I'll just get one easy assignment done." If that's all I get done, okay, because I don't feel guilty. More often than not, I'm motivated to keep working and get much of my work load done. (This also works with exercise!)
2. If you have "mindless" stuff to do, i.e. making flashcards for your foreign language class, put on a favorite TV show or some good tunes. It doesn't seem like such a monumental task anymore.
3. For your content heavy courses, sit down 1-2 times a week and make a study guide that covers the material you learned since the last study guide. It's a great refresher, often pays back when your profs quiz you over details from previous lectures, and allows you to "pick up" your study guide when it comes to crunch time before the test. You can even save these on your iPad or tablet and pull them up when you have a few moments.
4. If a lecture bases exam material solely on powerpoint (or predominately anyway), don't waste your time frantically scribbling notes. Print out the slides before lecture, take minimal notes on what the prof points out or adds extra. You'll have a better understanding of the material, be more engaged in the class, and your grade will benefit.
5. Take your lunches or dinners by yourself. I know it can be fun to socialize, but I always found myself wasting hours a week just chitchatting after meals. Pick one meal a day, grab some of your easier homework or a study guide and get things done. I completed ALL of my Spanish busy work this way, and was able to get in time to review for my next class.
6. If it's a small class (and I dont know if this is possible at larger universities), make nice with your professors. Your borderline A/A- just became an A, because you say "Hello" "Thank you" "Have a nice day" etc. If you show genuine interest in their class, come to office hours, raise your hand, your life will be so much easier when you need recommendation letters. I've had complete BEARS of professors acknowledge that I was a favorite, support me, and told me I could ask them for "anything" simply by doing what I stated above. Biochem was a BREEZE, and that teacher was not easy. People left her office in tears, and tbh I could not understand why for the longest time.