I didn’t bother with a full Instructable since this is a fairly simple project and these individual techniques are described all over the “interwebs” already. These photos are just for inspiration.
I bought a bunch of jars at garage sales, Hobby Lobby, etc. and created some labels in Adobe Illustrator.
I stained some vellum paper with used coffee grounds from the coffee maker and tea, and after they dried I just printed the labels onto the vellum in the laser printer. Vellum works well since it mimics old style rice paper used on vintage labels and doesn’t take on too much of the stain.
The “Bleached Atlantean Coral Nuggets” (white rocks), “Petrified Earthworm Carcasses” (lichen), “Small Mollusca Exo-Skeletons” (shells), “Mermaid Eggs” (plant hydrogel spheres), and “Mermaid Eggs” (hair gel) were all purchased at the dollar store.
The “Large Echinodermata/ Mollusca Exo-Skeletons” were left over from a bag of shells my wife bought to display in a glass bowl.
My favorite is the “98.9% Pure Depleted Neutronium Pellets (Extreme Existential Danger!!!)”. They were Pachinko machine balls I bought at a garage sale for $3.
Fun Fact: If these pellets were actually made of Neutronium, they would weigh a little over three tons each!!! I didn't count them so I don't know what the total weight of the jar would be, but it'd be hard to find a shelf strong enough to hold it. :-)
I made up the company name and designed the logo earlier for a steampunk mantle clock I’m half done with. Maybe I’ll finish it at some point.
Total cost- about $20 to $25.
I may stain the corks and seal them with wax, and maybe add some sisal or jute around the bottle necks in the future.