Modified from the excellent Companion Cube storage box by @chylld here on Printables. This is a non-Companion version of the Weighted Storage Cube from Portal, which doubles as a generic storage container.
This model is a mod of the single-color version of this print, so you will need to modify it yourself if you want to print this in multiple filament colors. Other than that, it should print pretty much identically to the original.
Other than the edited symbol, the rest of the print remains unchanged. It should still have the same internal volume and approximate filament cost (~100g or so).
Oh, and if you're wondering about the photo: it's just the finished print with a cheap RGB light inside. Thought it looked cooler than a regular photograph.
The author remixed this model.
I replaced the heart symbol with that of the Aperture Science logo, turning it into the standard Weighted Storage Cube from Portal.