Pro Tips:
Headphones from Fitness Stuff are the best way to gain fun while doing other things such as jogging, gardening, writing, painting, doing homework/studying for exams/presentations etc. The best part is they don't even need to listen to the music it just needs to be on.
Text your friends. Sims get upset if you call them at 3am but you can text them all day long and they never get mad.
Vampires are up in the early hours of the night so feel free to call them up.
Orange Juice + naps helps to make Sims get over sickness quicker. Sometimes you don't even need to buy medicine. Apple Juice for toddlers.