Anything other than Gu??

I’m training for my first half marathon and nearly died choking down (then actively not throwing up) Gu the first time a few weeks ago. I figured I would get used to it - but here we are several long runs later and I’m not finding it any easier.

What else is there? What do people like? Are there solid foods that work? I don’t know why I just can’t seem to make it work but it’s just so unpleasant. Are there other folks who got over the texture/feel/flavor and I just need to keep trying? Please help!