My daughters driving now and I'm trying to find something I can leave in her car that doesn't have issues with the heat. We had glucose tabs in there but they started to get kind of crystallized, she says they taste different but she's super picky so I can't say for sure that they really do or they look different so she says they do. Juice boxes seem like they'd get gross in the heat. She doesn't like skittles as she says you have to eat too many. Anyone had any luck with anything else?