Example page: http://harubex.github.io/Lavalamp
This is a small(ish) demo I made that uses metaballs to kinda-sorta simulate the effects of a lava lamp. I used this page as a guide to implementing my balls.
It also works on mobile, if you're into that sort of thing.
This was my first real effort at making something I could be proud of. I've thought about making changes - cleaning it up, maybe swapping jQuery UI out for something more reasonable. Honestly though, it's nice looking back at this as it is. I get to think about how far I've come in the last 4 years. I think that's kinda neat.