A treasure chest facing front. Download the zip file and unzip it in CustomModels (zip file already has the files in the appropriate folder, namely "LNSChest1"). To understand how to use it, download the custom level and play it. You definitely want to play the custom level (and look at it in the level editor) first so you understand how to use this model, it's slightly different from what you've seen before.
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Details:
I stole this model of a chest off a video game (I bet Loof101 might recognize which game immediately). As such I guess technically it is "illegal", but hopefully no company's gonna make a big fuzz over something as silly as an undistinguished chest. Also keep in mind that I actually used Milkshape to create the mesh itself from scratch, what I really stole was only the textures which I got from making a screenshot of the video game, plus some editing.
Please don't ask me right now about the details of making models in Milkshape or how to apply textures. You probably don't want to know anyway.

Anyway, this model's placement is a little unusual. The model's "dead spot" (the spot where the level editor thinks the model is located at) is actually on the tile behind where you would see the chest! You might wonder why I want to do that. Well, play the demo level and you'll understand why. Be sure to look at the placement of the model in the level editor so you understand how to use it properly in your own levels.
The chest is exactly 1 tile unit from front to back, but slightly more than 1 tile unit from left to right (so it'll overlap slightly into the adjacent tiles on left and right, not a big deal though). Also, because the total height is higher than 1 tile unit, it's probably best to place it against a wall with height at least 1.5 for a more natural look.
The only criticism I have right now is that because we look down from above in Wonderland, you see far too much of the chest's cover and not enough of the body, but I need a break before even considering any more adjustments to the model.