For my students who need to practice the Pen Tool, Adobe’s created an adorable online game to practice it’s usage. The pen tool is important in Adobe Illustrator (of course), but also in Photoshop, After Effects, Premiere, InDesign, Animate… there’s a version of it in almost every Adobe App!
Check out the game here: https://helpx.adobe.com/uk/illustrator/how-to/pen-tool-game.html