For everyone’s information, they are

150 x 150 pixel grayscale, 384-or-less-‘shades’ of black to white, .png transparent clip art with no background.

.png files are for Windows POS Phone Operating System Apps:

Small tile Start menu SmallTile.png
Medium tile Start menu, Microsoft Store listing* Square150x150Logo.png
Wide tile Start menu Wide310x150Logo.png
Large tile Start menu, Microsoft Store listing* LargeTile.png
App icon App list in start menu, task bar, task manager Square44x44Logo.png
Splash screen The app’s splash screen SplashScreen.png
Badge logo Your app’s tiles BadgeLogo.png
Package logo/Store logo App installer, Partner Center, the “Report an app” option in the Store, the “Write a review” option in the Store StoreLogo.png

The files in today’s giveaway are not multi-resolution color .ico icon files for Windows desktop and Windows File Explorer,
they do not contain the standard suite of resolutions within each image file:
256 x 256 pixels – 32bit (24bit colour, 8bit transparency)
48 x 48 pixels – 32bit (24bit colour, 8bit transparency)
32 x 32 pixels – 32bit (24bit colour, 8bit transparency)
16 x 16 pixels – 32bit (24bit colour, 8bit transparency).

The .png files are cartoon-ish style, and things like the shopping carriage would look out of place on a non-cartoon website or app, for example.

I would like to read anyone’s comments on the ways they found these useful – real-life-use-cases.

Thanks for letting us explore this and share.
.

Excellent