/diy/ - Do It Yourself

Alright, self-taught miniature glass blower here, one of my favorite things to make are these vials, pic related.

I'm also a science guy so I fill them with unusual and interesting things, like ferric oxide so you can make magnetic field forms in them, or glowing powder so you can find them in the dark for hours. I bought the corks and eye hooks bulk from china so they're fairly cheap.

Trying to sell them and make enough cash to keep doing what I love, any tips for what to put in them/other stuff to make them better?

Also, email field if you want one for yourself. Prices are negotiable.