I can not tell you how many times I've laid in my bed and thought about how bored I was or that I have nothing to do. But don't do these all in the same day or else you'll have nothing to do the next time you're bored.
1. Netflix, Netflix, and more Netfllix
Seriously, start a new show, rewatch an old one, or binge on scary movies. This is the ultimate way to stay in bed without having the constant bored feeling.
2. Start a project
Recently I've been doing cool Pinterest DIY's, planning a vacation, and looking up countless tattoo ideas to cover my entire body. This can keep me busy for a few hours, especially if I'm really into what I'm doing.
3. Go somewhere
Go especially if you have access to a car or train because you can actually get anywhere. Go to the beach, a city, a zoo, the mall, etc. Your options are endless.
4. Clean and organize
Yes, you have to be the end all be all and poster child for boredness at this level, but depending on how dirty or unorganized you are this could take up a few hours of your time.
5. Volunteer
This one is a favorite because you get to help people and make others happy, and that feels really good too. Plus, it doesn't hurt to have volunteer hours on your resumé.
6. Exercise
And it doesn't have to be going to the gym or going running for hours. You can go for a bike ride, go swimming, or start a game of basketball with some friends.
7. Listen to some new music
There is almost an infinite amount of music out there. Find a new favorite song, find new music to hate; just do something.
8. Take a nap
The best way to waste a few hours is to just sleep, and I don't think anyone will disagree.
9. Earn some money
I don't mean going out and getting a full time job, but there are apps like Spare5 that pay you to do small tasks for a little bit of money, and it adds up. (It actually does work; I've been using it for a while.) Or find some old clothes, toys, or gaming systems, and sell them online.
10. Do something stupid and funny.
I always see those little blurbs about people pretending to be secret agents in an elevator, asking random people for autographs, or someone putting a Dora doll in the middle of the mall and when someone tries to pick it up yell "SWIPER NO SWIPING." These things get you out of the house and cracking up.