This guy's videos are great.  I also watched the "making the world's most concentrated Red Bull" one.
<br /><a href='https://www.youtube.com/watch?v=crjxpZHv7Hk
'>https://www.youtube.com/watch?v=crjxpZHv7Hk
</a><br />
<br />Also there's a guy who makes car wheels out of odd materials?
<br /><a href='https://www.youtube.com/watch?v=cLRrvxsg0c4'>https://www.youtube.com/watch?v=cLRrvxsg0c4</a>