High quality proto board for a great price.
For ATtiny proto shield
I really like this shield because it's made very well, is super convenient, an the idea of the breadboard layout "cartridges" that fit on it make transferring breadboard designs to a more permanent pcb very simple. The room for the actual breadboard comes in handy, but it would be col if the mounting holes for the pcbs didn't overlap with the breadboard's space. That way, you could stick the breadboard down and with standoffs, secure the pcb on top and poke leads through it to remove and solder easily. Overall it's a fantastic idea and a great product.