Icon stencils
Free
Tableau Électrique
Stencil for diagramming switchboards.
Free
Talk Bubbles
A stencil set for talk/conversation bubbles.
Free
Tango Actions
Tango icon library actions symbols
Free
Tango Categories
Tango icon library category symbols
Free
Tango Devices
Tango icon library device symbols
Free
Tango Emblems
Tango icon library emblem symbols
Free
Tango Status
Tango icon library status symbols
Free
Tetris
Tetris blocks and Matrix
Free
This is Service Design Thinking Icon Set
"This is Service Design Thinking" is a book on service design that offers up a visual language/icon set with a CC license. The only problem is that they only offer AI vector files or flat pdfs. That problem is solved here!