Travel potty for the 2 yr old. We use one like this
For the nuke option, a cheap android tablet with a few shows and movies on it for the 2 yr old would solve the iPad situation, but we try to only use that when nothing else works. There are noise limit headphones for kids so each kid can have their own show. We found both on FB marketplace for cheap.
But it's also important that kids feel boredom. That's when they feel most creative. See eg this IG post.