Not sure if you've already seen this, but it came up on my YouTube feed, and I hadn't seen it yet, and it's too good not to share.
It has to be incredibly difficult to come up with a new and creative way to propose now, but this guy took advantage of his girlfriend being a contestant on Family Feud, and even got the help of host Steve Harvey. It's great how it casually turns into the proposal, and Steve even mocks the girl a little bit, when she says "it's coming...I know." He said, "I bet you don't." haha.
My favorite part is at 2:44 into it, you can see one of her family members wiping tears from his eyes.