The next hack was easy enough to pull off, requiring two ingredients: aloe vera and coffee grounds.
It took a few attempts to find pure aloe vera; I couldn't find it at the drugstore, but I found it in the produce department of my grocery store. I mixed a glop of aloe vera and about a teaspoon of unused coffee grounds and put the concoction under my eyes.
Then, while waiting for it to do its thing, I made the mistake of reading the comments. So many users commented that if you have hyperpigmentation, you should avoid putting dark coffee grounds on your face because it could make your skin even darker (there's little research on this, but Medical News Today recommends using coffee grounds to reduce inflammation). I got scared and washed the whole thing off, so I can't say I gave this one a fair try, but it wasn't worth the potential damage to me.