Can foster exploration of light, colour, form, texture and so on. Drawing in a light layer of sand on a light box is quite an experience for children too. All about bringing a sense of wonder to the learning environment.
'Children paint plexiglass and make an outdoor exhibit for them to walk through. Viachroma by Rowena Martinich: Pedestrians are enveloped in colored lights and shadows as sunlight passes throught at different times of day.
"Tsumiki" chalk building blocks by a Japanese company. This is such a cool idea for kids to design there toy with chalk and then redo it over and over again. I bet you could chalkboard paint wooden blocks and DIY.
DIY Writing Desk
WOW!!! I love this DIY writing desk! She shows you how to build it and it totally looks doable!