Re ventilation, the BB2 vents are all on the main, back face, none at the sides or front.

Unfortunately, with the LEDs being on the main front face, you would lose sight of those as well as the EE logo, if trying the double-sided sticky patches method as described; or similar Hook&Loop.

In checking those aspects, I also noted that there are two small rubber feet on the lower edge, to assist it standing in picture-frame mode.

Further poor container design.

Another little niggle with the BB2.

I had not tried using the BB2's USB Port until a few minutes back.

If the USB Stick has an LED on its main face, this is not conventionally visible when plugged in to the BB2 USB Port

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If you are acquainted with the BT Home Hub 5, the BB2 is very similar, particularly when assessing for wall-mounting..