Here are a few of our favorite pictures from the Silicon Valley STEAM Festival today. Above, a mobile shark tank from the San Francisco Bay Marine Science Institute.

One of the interesting aircraft on display.

Some of the many electric cars.

Space-rated carpet treads on a mini-lunar rover to help it get traction in loose dust.

A Lotus from TechShop San Jose with a Young Makers banner on the windshield.

You can check out the full set of pictures on flickr.