Hang this on the wall at the children's level and let them explore it in passing.
Does the child open and close certain flaps over and over again?
Possible things to glue under the flaps: plexiglass mirror, shiny paper, stickers and stars, feathers, photos of children.
Eliminate the bottom piece of cardboard and the textures and simply tape the cardboard with the flaps on the window tat the children's eye level. They can open the "doors" to lookoutside. Tape some colored cellophane behind some of the doors!
Young children, especially toddlers, love flaps--anything with a hinge action that opens and shuts. It's a way for children to experience "object permanence"--making things appearand disappear. This is a visually stimulating toy. They will also use thumb and forefinger to open the flaps.