TRTL BOT (http://www.trtlbot.com) has released its TRTL Stand 4 and Minimalist 4 multifunctional, eco-friendly iPhone 4 cases. They’re designed in the US using 100% recycled plastic.

The TRTL Stand 4 (pictured) costs US$29.99 and is a multimedia optimizer, viewing stand/case that lets you prop up your iPhone in several modes; portrait (ideal for FaceTime), landscape (good for watching videos) and Tripod (good for timed photos).

The $34.99 Minimalist 4 is a wallet substitute/case combo. It can hold up to three ID or credit cards, as well as an iPhone 4.