I use measuring spoons,that you can buy at your grocery store for baking.1 teaspoon = 5 ML and 1 tablespoon = 15 ml
There are a ton of different things you can use at a Walgreens - and the one near me is open 24 hours a day, so that's always been a good deal for me since sometimes I lose measuring tools or I drop them and then am paranoid that they're infected with something on the floor.
I know, I know....
But the measuring spoons they give with children's medicine work really well. You can just ask the pharmacist about those since sometimes they hang onto them in the back.
Or measuring cups work well too, but there's always the spill factor for me so that seems difficult to navigate.
You don't want to fill measuring cups too much, but if you don't fill them completely up to the edge, then you're not actually measuring out the complete amount. And sometimes it's easy to waste nutes when they're dripping over the edges...
Syringes are also around the drugstore, I'm sure, though I haven't used them.
Just wander around a drugstore and see what they have. You'll be surprised at everything you can get, plus you pick up a bag of chips too. Win win.