Eureka is a simple add-on for Valkyrien Skies that fits with vanilla aesthetic and is easy and fun to use.
Build and design your own ship out of ordinary (or modded!) Minecraft blocks, place a Ship Helm, shift + right-click, assemble, and watch your creation suddenly infuse with physics. No longer are your Minecraft builds bound to remain forever static, sitting in the same place for all eternity.
Create: Interactive adds interactive contraptions, enhanced Create contraptions powered by Interactive that support block entities, breaking and placing blocks while in motion, improved player/entity collision, and one-way collision with Valkyrien Skies ships. By default, Interactive automatically converts all new Create contraptions to interactive contraptions.