I use them too
I also use them to rub in my concelear for my eyebrows
Or get a dab in Vaseline and blend it with my lipstick so my lips won't be chappy
I use them for the shell of my ear, but I try not to put them in my ear canal because I'm deathly afraid of bursting my eardrum and being deaf forever.
I know it's terrible and I shouldn't, but I cannot stand the feeling of water in my ears. Bleh.
Other than that, they're incredibly useful for fixing eyeliner mistakes & getting mascara flakes off of your cheeks without ruining your cake-face.