Thinglink is another application which allows educators to create interactive images, letting students touch and interact with the provided image. Here's an example of the use, parts of a fish: https://www.thinglink.com/scene/1189499502755577858
Kahoot can be a good tool for introducing and testing students' skills of grammar and vocabulary. Here's an example for introduction of A1 Level subject "Animals&Zoo". https://create.kahoot.it/share/animals/3f99907f-e907-4452-8f31-3cdddb19b143