I'm really happy with how this turned out. I took my time and spent the entire afternoon making sure I put it together right, so I'm glad that my time wasn't wasted. I used a finished design from way back in February. I had it earmarked for a cube for ages, in fact I'd put all the supplies together in one bag awaiting the nerve to do it. Turns out I didn't have the right size piece of foam, and didn't like my chances of cutting it down accurately so went searching for something else to use. I found an old box that used to hold earrings that I had put aside thinking it would come in handy for packaging up a small gift. Here's the supplies I chose, although I didn't end up using the bottom ribbon:
Here's what I turned it into:
You can read all the info on the original design
here.
This is the tutorial I used, very comprehensive.