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Adding to Chuck's comment, if you click on the little cog icon in the top right corner, and chose All you'll have a very decent collection to choose from.
But Google will find many thousands more for you
They are extremely easy to make? Use the Pen tool create a path then use menu Edit>Define Custom Shape.
Trace and image or use a program to then use menu Edit>Define Custom Shape.
Use the magic wand select the black in a black and white drawing have Photoshop convert the selection to a Path menu Edit>Define Custom Shape.
My son draw a self portrait character select menu Edit>Define Custom Shape.
I even wrote a script to automate the process.