The file 'Laser Cut Marble Run Adapter For Ikea Malm Dresser' is (asy,pdf,svg) file type, size is 26.9KB.
If you've got one of those Malm dressers from ikea -- http://www.ikea.com/us/en/catalog/categories/series/07468/ -- then you can turn it rather easily into a pretty sweet marble run. Marbles will roll across the top of the drawer, then down this half-ellipse-shaped ramp, and then across the next row of drawers in the other direction.
To make this ramp, cut it out of a thin, flexible material, and assemble the pieces. In my dreams, this ramp should be made out of 1/32" birch aircraft plywood with a laser cutter. In real life, a laser printer, a cereal box and an x-acto knife work fine.
Photos forthcoming, as soon as I've made a set of these to replace the current manually constructed prototypes. I haven't finalized all the dimensions yet, and some bits (epsecially the cutouts for the drawer slides) might be in the wrong places for your dresser.
Edit: Design, test, iterate! Made a couple of small tweaks. Some photos of the previous version, sorry for the low res.
ramp.asy | 18.4KB | |
ramp.pdf | 11.1KB | |
ramp.svg | 29.5KB |