To include flowcharts, graphs and other visual representations use Diagrams.net. It is free, open source software that can be used on-line (or downloaded onto your computer). It can create anything from traditional flowcharts to Venn diagrams, tables, and pretty much any type of chart you can think of. There’s a a paid version if you would like to support the project, but it’s not required.
Have students create an interactive story using a flowchart or create a poster explaining concepts that have learned in class.