If you are drafting figures for a scientific paper or presentation, remember that https://scidraw.io/ exists: a repository of free SVG cartoons for science.
#SciDraw is supported by the Sainsbury Wellcome Centre – @SWC_Neuro
All content on SciDraw is shared under creative commons license (CC-BY) unless stated otherwise.

A collection of example SciDraw images featuring multiple birds and two bird behaviour experimental setups.

A collection of example SciDraw images relating to Drosophila: brain cartoons, a pair of flies engaged in courtship with the male having its wing at 90 degree as it sings, a larva, and a schematic of the mushroom body.

A collection of example SciDraw images featuring lab pipettes, an analytical balance, bacteria, DNA, mouse brains, human brain, a heart, and a synapse.