Squeeze Bottle

I love to cook, so I watch America's Test Kitchen on television, even though I cannot make most of the recipes.  One day, I saw the chef using a clear plastic bottle with a nozzle, sort of like the ketchup bottles at diners.  The America's Teat Kitchen crew were using the bottle for vegetable oil.  I get my canola oil at Costco in large bottles, so making a mess once to fill the squeeze bottle is definitely better than making a mess every time I want to use oil.  I got two clear plastic squeeze bottles at Bed Bath & Beyond.  I have not decided what to put in the second bottle, but I suppose it could be anything.  Any ideas?