principleofwork Homemade children’s toy – model of a wind tunnel on a white background 3 Jahren ago Homemade children's toy - model of a wind tunnel on a white backgroundDas Bild Homemade children's toy - model of… Children’s toy demonstrating the principle of the vacuum cleaner 3 Jahren ago Children's toy demonstrating the principle of the vacuum cleanerDas Bild Children's toy demonstrating the principle of the vacuum cleaner von…