Want to save light covers- How can I use paint to make them abstract?

This lady used Modern Masters metallic paints to paint hers, if you look at the picture on pinterest here (link below), you can see her final product, click to go to her blog page. The images don't show up on her page for some reason, but she guides you through what she did:

https://www.pinterest.com/pin/76420524900723992/

Unicorn spit will jazz them up, check out unicorn spit gel stain on youtube

I use whatever paint I have on hand. Clean them up first and roughen the surface slightly (I use a sponge sander) so that the paint sticks. Or you could start with a base coat of a spray paint meant for plastic (I'd still clean them up first). Here's another idea: modpodge and any kind of paper or fabric that has a design you like. Clear sealer or more modpodge over it and you're good to go.

I would use a glass etching product and etch them with a modern pattern, like bold stripes.

I am wanting to do something with mine. thanks for all the beautiful ideas!