Chris @ chris3d.com build his own Attiny85 board:
The modularity of Arduinos is great, but after playing with them for a year or so, I wanted to start building things that needed a little more integration. I also wanted to design the components and programming around the actual controller I’d be using. So, I decided to start by building a small breadboard friendly ATTiny85.
Breadboard Friendly ATTiny85 – [Link]
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