After it dawned on me that defining models manually in 3D arrays would quickly be my demise, I spent some time on writing a voxel editor to assist in the arduous task of creating content.
If you would like to mess around with the editor, you can get it here. If you mail me your .model file, I'll pop a screenshot of your model in my next post as well as include it in the game if it's something useful. At the moment, input is entirely keyboard-based as it serves my purposes well enough. You can obtain a list of keyboard commands by pressing h. Please note that all commands are lower-case as I was too lazy to implement checks for upper-case.
Please note, this is a potion, not a traffic cone.