Let us know how things turn out!Contamination is not a concern unless pregnant women normally urinate on your dishes.
Any clean container that will hold urine will do. Dixie cup, your favorite coffee mug, a ziploc bag, tupperware, whatever. (The bag is a rather ingenious idea, actually.) The cups that doctors give us for urine tests are not special. You just want something that holds enough pee for you to dip the stick/strip into it. 