Algodoo

Not too difficult but time consuming to make. Required a bit of scripting but does add a nice look to your scene just so your not using the text in the boxes to get your speed all the time.

Anyone have any idea on how to make this idea a bit simpler and maybe have less parts? Something that would happen alot would be all of the boxes would move alil bit causing blank spots to appear. I breifly experimented with using greater than/less than stuff which didnt work out for me. Any tips would be great!