This may be a silly question lol but for those of you who use easy @ home OPKs/pregnancy tests or other type of test that you have to dip in urine, what type of cup do you pee into?

I was just going to use a disposable paper Dixie cup but the instructions say plastic or glass...... I really don’t want to pee into our glass drinking cups lol, and I hate using plastic 😖

Is it actually important that I use glass/plastic, or will paper be fine? What do you all use?