Various SVG icons i made, you can use them freely anywhere with attribution © pier-bezuhoff (CC-BY license).
They are made to fit in with 24px Outlined Material icons.

Anchor
Bi inversion
Chessboard crossed
Chessboard reflected
Chessboard
Circle by 3 points
Circle by center and radius
Circle inversion
Extrapolate lines
Fill region
Fill swiped circles
Flagged point
Haired arrow invisible
Haired arrow visible
Interpolate lines
Intersection settings
Line by 2 points
Multiselect
Phantom crossed
Phantom
Propeller
Rectangle by 2 points
Shark fin
Spiral
Splash
Swipe select
Visible circle