For additional context, try watching the following videos.
BB stacking around a cylinder (related main channel video):
   • BB packing problem on a cylinder (& t...  
Zero-waste coffee table (slightly related to this video):
   • Zero-scrap coffee table (and other di...  

Hey! ding*ding*ding Description reader mega-bonus egg!
Do you want one of those button-magnets that are seen all over the place in my videos? I will happily send you one, for free, to (most) anywhere in the world. You just have to send me a private message from my main YouTube page. First click 'About,' and then click the 'Send message' button. Include your mailing address, and a complete sentence that lets me know that you are human. I'm serious about the complete sentence part; it is very difficult to read "USTUILL GOT BUTONS OMG WANT ONESO MSG ME WHEN EVER U GET THIS," and I also receive lots of spam from all of the bottom-feeders. Please mention that you're after a button-magnet, just so that I know what you're talking about. If I've already responded to your message, that means I've written out your envelope. If you haven't received it after two weeks, please let me know! See the following checkboxes for availability:

Available right now?
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SORRY, no more available now. There will be chances in the future.