So when I wake up on Saturday and it's 8:30 AM and I'm not going to bed until 11:30 PM, how do I fill up those 15 hours? Also keep in mind we're trying to not spend money
Saturday
8:30 AM Breakfast 30 minutes
9:00 AM head to gym
10:00 AM return home to shower and change
10:30 AM plan weekly meals to save cash
11:00 AM go food shopping for the week
11:30 AM return home and put groceries away
12:00 PM Lunch
12:30 PM Read for 30 minutes - anything self help related or learning a new skill lying down.
1:00 PM Play video games for 60 minutes and put yourself on the clock
2:00 PM Go for a walk outdoors/park/frisbee or something outdoorsy
3:00 PM clean up place
3:30 PM Do a puzzle
4:00 PM plan out work week
5:00 PM start planning out and cooking dinner
6:00 PM Eat Dinner
7:00 PM clean up.
8:00 PM Watch 2 hour movie.
10:00 PM go to bed earlier to give yourself extra sleep since you are beat from your productive day.
Other things people mentioned could be substituted.
I would also check free public events in your town. There is a lot of free things you can do such as festivals, concerts, etc especially when the weather starts to get nicer.