Balloon powered car 7 years, 11 months Other 2395 790 Cooling fan mount and f 7 years, 11 months Printers 2616 957 Duck 7 years, 11 months Other 2149 768 Bloxen, masonry 7 years, 11 months Other 1940 702 Screwless heart gears 7 years, 11 months Other 1809 754 Lego 8x1 gear rack 7 years, 11 months Home 1719 726 Lego 16x1 gear rack 7 years, 11 months Other 2333 748 Dice 7 years, 11 months Other 2261 810 Train track - straight 7 years, 11 months Other 1593 723 Track - short curve 7 years, 11 months Other 1878 725 Track short bend 7 years, 11 months Other 1911 716 Track - long straight 7 years, 11 months Other 1832 684