Another way to use it is to buy a bit more, so you have enough to cover the minimum and sell it again. An even better solution would be to not collect dust in the first place.
Or, since you never know in crypto, you can just keep the dust until it becomes worth something again.
I've had (and still have) many different altcoins, all barely worth anything, and for sure not worth the time to figure out how to sell them for a few pennies. I imagine many people have this "problem". Wouldn't it be nice to create a website where you can just upload old and almost empty altcoin wallets, after which the site collects them, and once worth it, sells them to donate the proceedings to some (crypto related) charity?