4-hydroxy-3-methoxycinnamic acid in ethyl acetate

Cobalt(II) Chloride
I simply dissolved the anodes from a lithium-ion battery in HCl, boiled it down, and grew the crystals from there.

This is a pure copper sulfate crystal. I spent 2 months growing it

A bunch of crystals decided to grow on the glass rod

I grew a single crystal of monoammonium phosphate

The shiniest and most intricate copper acetate crystal I have managed to grow so far

Single crystals of KMnO4 that I managed to extract from a large cluster of crystals resulted from cooling down a hot saturated solution to room temperature. The compound seems to crystallize either as octahedral prisms (similar to alums) or long, flat needles with a beautiful golden metallic luster. The octahedral crystal is small, only about 2mm in size, while the needle is roughly 1cm long. All images were taken with my shitty phone camera. Also, despite being a relatively common chemical, I really haven't seen anyone grow crystals of KMnO4 yet for some reasons. I did try to grow a large single crystal from this seed, but failed miserably when the solution somehow dissolved the fishing line I used to tie the seed down.

I made a simple syrup and it’s formed huge sugar crystals on the bottom