If you, like me, love themed baked goods, then Rosanna Pansino's videos are perfect. In this one, she does a simple how-to for a Borg cube cake that looks like something that even the less artistically inclined could easily pull off.
Pansino not only makes the cake, she does so while doing some Seven of Nine cosplay. At the end of the video, you can see how that was done, also. See more of Pansino's "Nerdy Nummies" series at her youtube channel.