heres a blend file with a very strange material that looks like slime encased in glass. It works best in Cycles as it has some subsurface stuff going on, but it looks cool in EEVEE too! try using it on metaballs, as the inside part will stick together nicely.
def peep the nodes too, lmk if you have any questions about the tech!
if you wanna use this in your own start up files, just copy the object with the material, and paste it into another scene!