I have curretnly designed a shield that incorporates the following..
8 1WIre Outputs
This board will allow anyone to learn about different interface technologies(eg spi, i2c etc) and have the ability for anyone to have shield that will cover 80% of everyones ideas into practice.
Let me know if anyone is interested in this shield, i will be taking pre-orders. The pcb is currently being finilised.
I have worked on this shield for the last year so i feel it will be useful to alot of people. My background is in electronics so i am excited to releasmy first product.