If you have a mostly glass patio door, you can easily make it feel more private by installing door blinds. These affordable, pre-assembled units are easy to install and let you angle blinds for maximum light and maximum privacy.
Fabric painting is a very easy craft to learn on your own. You also don’t need any particular drawing/painting talent, as long as you can make yourself a stencil. It’s a really fun way to personalize clothing.
If you have a room you want to divide, there’s an incredibly simple, inexpensive way to do it: make a room divider curtain. It doesn’t involve any drilling, any holes in any walls, any carpentry or even much work. And you can get creative with it.