OSMO is a fun education set of apps for iPad that help blur the lines between physical and digical world, designed for children 5-12 yo (https://www.playosmo.com/)
One of the games is called Tangram: you manipulate colorful triangles and other shapes to construct preset designs.
But if you lost one or more of the colorful shapes, you can't play anymore. Except if you download and print this file, ready for you to use. Just paint them in the right color according to the attached pdf.
It prints just fine at low resolution with any PLA. You can print them all at once (2h and 22g, say around £0.50) or split it and print only the one you lost (from 7' to 15', from 25', from 2g to 6g, from £0.06 to £0.20)
NB: you shouldn't use this to avoid buying the game in the first place, knowing that the iPad apps are free to download from the Appstore, but only if you own the game and need a replacement - just saying.