A great safety solution for floors; Foam hardwood flooring, maybe for a play area for the kids without having to lose the affect of the existing hardwood flooring already installed. Simply put it on top of the existing floors. Also used as an option to cover floor areas for Seniors at risk of falling.
Sensory: Use soft foam tiles for a sensory room/area floor! The faux-wood can be more calming than loud colors and is also more "adult-looking" for a sensory room teens and adults will be using. http://www.foamtiles.com/tiles/38-soft-wood-tiles.html
modular carpet tiles (Heaven Sent, $14 each; flor.com), which are relatively inexpensive and durable. If a truly disastrous spill leaves a stain, you can replace the individual tile, not the whole rug.
Kids Wood Playground Play Set for Floor & Ceiling / Wooden Indoor Training Gym Sport Set with Accessories Equipment: Climber, Gymnastic Swing Rings, Climbing Rope, Rope Ladder / Suit for Apartment, School, Kids room and Playroom / Wallbarz Woodsy