Here are some simple icon designs. I like how easy clean they are and each one has a specific opening to it that allows the icon to be a part of the background. I also like how they are all see through and tie in well the background also.

Free Business & Finance Icon Set via InstantShift Web Design Magazine Web Design Magazine and Freepik


Ultimate Free Icon Set: 1000 Free Icons Even for a mere english teacher like me, this is beyond useful.