Laura babb, welcome to DC,
I am not sure if you have a Home Goods near by, they used to sell a set of three bottles (German made) with thin, thick and slanted tips for $3.99. They were also color coded and very neat. Good luck with your search.
"Tell me what you eat, and I will tell you what you are" Anthelme Brillat-Savarin
The dollar store is a great source, but I find when you put an oil-based product in it I have to change the container out once -in -a-while. It seems the oil brakes down the plastic. I don't put in the dishwasher-even on the top shelf. They're so cheap though i even use one to rinse out the back of my dogs teeth after brushing. If he bites it - who cares.