Plastic Squeeze Bottles for Sauces 8 Inch 2 Inch Diameter Clear Squeeze Bottles for Liquids Condiment Squeeze Bottles for Home Kitchen Storage 6 Pack

IMO, I have seen others suggest getting a funnel and dumping them into a sauce bottle that has a pop on and off cap. You can cut the tip larger for them to walk through. You can poke some hole with a clothes pin so they can breathe. example of bottle