Here's a link for a product that I feel may help those of us who travel with out own loose tea. Yes, additionally, you will need a method to boil water.

http://www.adagio.com/teaware/activiTEA.html

It holds 10 ounces. Sells for $19 plus shipping.

I have purchased tea from Adagio.com for many years and have been happy with their products, service and attitude about real tea.