Game Lab - Sprites "Talking"

I have some students who would like it to appear that their sprites are talking (with a speech bubble). They have previously used Scratch and this is easy to do in that programming platform with their say block. What might be the easiest way to accomplish something similar?

Some ideas we had are:
-create animations frames to be used with the text (however, we could not find a way to easily add text to the animations)
-use functions to call the text and a speech bubble as needed

Those sound like good ideas. I did find a website that makes speech bubbles that can be downloaded as .png files. It works at my school and the files were small enough to upload into the animations easily.

Let us know if you find a different way!