+1 on Mimimus.biz. The fun part is the free shipping if you buy $20, giving a great excuse for getting all kinds of good stuff. Definitely get the "hotel freebie" style sewing kits and check out single application insect repellent, sunscreen, medicaiond and all kinds of condiments.
To fix the problem at hand, I would go to the travel accessories in a big box store and get a small squeeze bottle. With the current airline restrictions on the quantities of liquids, stores are carrying more bottles. REI has GoToobs.