I've seen a lot of motion graphics animations from Cinema4D - expanding balloons compressed into a shape. The most recent one is the animation from Mi Fans 2021
Here's what I've tried:
First thing I tried is using a Cloth simulation instead of Softbody, thinking it will expand by using the pressure settings.
I tried Softbody, but because the object cant expand on its own, I added a Force Field inside, and here's what happened.
It works for some, but as you can see, as the "balloon" expands it leaves the force field so now the force field is pushing the object to a corner.
Right now I'm still finding the best way to do it in Blender, I've researched some c4D tutorials to get the idea of how to do it.