Never has sitting in the corner been so fun with Sphero and a 3D printed corner ramp ;)
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This is something I put together in Sketchup and it works quite well.
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There are a few cosmetic changes I plan to make but a lot of fun as is.
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If you don't have one see http://www.gosphero.com/
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UPDATED: Now the model has some style. Just in the STL; the skp is still the plain version.

Low resolution (impatient) .4mm
3 Perimeters
10% infill