Our colleague Sven Boulanger made a nice little online tool “SimpleCircuit”. A scripting language that allows you to draw simple circuit schematics with only a few lines of text. You can cut-and-paste the vector graphics in datasheets, presentations, product folders etc.
The tool runs in the browser and is publicly accessible at https://svenboulanger.github.io/SimpleCircuit/.
Example of a schematic and its underlying script: