Easy! You only need two parts - a Feather Huzzah and an OLED FeatherWing
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If you happen to be an AdaBox subscriber (what? you should be!) You can find these parts in your Adabox 003 kit!
While I started on a breadboard, I ended up making a cute little sandwich without socket headers at all by connecting the OLED directly to the Feather HUZZAH
If you press the OLED headers against a table you can use a little solder to wick into each hole and have a perfectly flat bottom side. That will keep it from scratching your desk!