Here's one fun use: replacing egg whites in shaken cocktails. Particularly useful for vegan friends (or anyone who feels squeamish about raw egg as an ingredient). As long as you have good shaking technique, the foam and mouthfeel get pretty close to egg-based methods.
> or anyone who feels squeamish about raw egg as an ingredient I still use chickpea juice in cocktails to mix it up. But the chance of a salmonella poisoning from eggs in the modern US supply chain is astronomically low. You're at much higher risk from most produce. If you're really risk-averse, you can always sous vide your eggs at 132 F for 60 minutes. This will pasteurize the surface (where any bacteria live), yet…
Immunocompromised individuals may still find these risks unacceptable, and then aquafaba or pasteurization is a great option.