Best option it to Pass on everything you don't want first, allowing those rolls to complete first.

If you just want one thing, roll Need on it.

If you want multiple things, roll Need on one, the one you want the most, then wait. If/when you lose that roll, then you roll Need on the second item, and so on.

Obviously if this takes too long it can get a bit obnoxious, so then you use chat and say what you're rolling on, etc.