Simple customizable can dispenser to put in your fridge. The included STLs are for US 355 mL (12 fl oz) cans in a dispenser 341mm deep and 160mm high. Want something else? Go grab OpenSCAD (I recommend a development snapshot, it has a customizer UI you can turn on in the prefs) or see if Thingiverse's customizer is working today. Height is adjusted manually so you can have dispensers for different sized cans next to each other and still have a flat top.
This one's a bit complicated... if your print bed is large enough (or fridge small enough, I suppose) you can use the full side and top pieces. Otherwise, you'll need the half side and tops.
For the side pieces, print with zero top and bottom layers and 15% infill. The STLs give you the right side; mirror and print again for the left.
For the top piece, if you're using Slic3r double click on the object, click load modifier, and select the matching modifier STL. Then, highlight the modifier in the list and click the + under object settings. Select layers -> bottom solid layers and set it to zero. Do the same for layers -> top solid layers. When you slice, this'll give you a top piece that is solid where you glue it to the sides but mesh in the center for airflow.
Infill pattern to taste... I used 15% triangles for the sides and 20% grid for the top for the print speed, but I think I'd do honeycomb all around for the next one I print.
The pieces need to be glued together. I used standard superglue.
If you're using the half side pieces, glue them together in the middle. Then, glue the bottom supports on to the bottom. Once that's dried, glue the top on and you're done.