Have a baby. You'll have fun in the process of making the baby. lol
No but seriously don't make a baby just because you're bored that was just a joke.
Only make a baby if you really want one and can take care of it.
If you do have a baby though you'll never be bored as they will keep you busy.
When I find myself getting bored around the house I step outside and just take a walk.
That's if I can't find anything else to do in the house. For things to do in the house, clean your house, wash dishes by hand, move your furniture around.
Put a fresh coat of paint on your walls.
Put on some music and sing and dance.
Or just browse the internet.
For things to do outside try taking up gardening. Plant some flowers or even food you can eat.
Working in a Garden will get you outside and keep you busy.