Arduino Bench Tester

Just a simple Arduino+Breadboard test Bench. Similar to many others but this one tilts the Arduino towards the user to easier see the headers. There's 2 notches cut into the side of the board for future add-ons coming as the need arises

This is a tight fit! no screws needed but the option is there.

Let me know what you think. Any suggestions or criticisms are appreciated.
What add-ons would you want to see?

Don't forget to post your makes!