Just on-boarded an RBION recently, and my first order of business was to remedy Stern's lack of playfield toys. (Third photo, across the top: unicorn, Neptune, Loch Ness Monster, Taj Mahal, Phoenix, Yeti, Mayan Temple, Giant Squid, Parthenon, Jackelope, Pyramids.)
The Idol was made from a paper cup and an old plastic lei. The first version looked even better, with easter basket grass for hair, but tended to get in the way of the habitrail, so I cut it down a little. The alien undergoing the autopsy actually sits really securely but the occasional airborne ball jiggles it; thus far I haven't had to take off the glass to fix it. Bigfoot's going nowhere; very, very solid placement because it has adjustable limbs, so I just fiddled with it until it was wedged in securely.