That`s what happens when you have a day off... :) I built a case for my Raspberry Pi and Sense HAT with this LEGO Minecraft-Set called "21119 - The Dungeon" (http://www.lego.com/en-us/minecraft/products/21119). It`s quite cheap and I only used the parts that came with the set.
You can access all the ports and if you remove the top, you can view the LEDs from the Sense HAT. I want to use this for programming the Sense HAT Minecraft Map - have a look at this instruction from the Raspberry Pi Foundation: https://www.raspberrypi.org/learning/sense-hat-minecraft-map/
Thanks for watching and have fun with your Raspberry Pi!