How else can my young nephews be a part of the wedding?

Thanks everyone for your suggestions. We have decided to have the oldest 2 nephews be ring security. My sister-in-law said her middle son is the best one to carry the rings; if you tell him something is important he will be extra careful. My youngest nephew will carry a "here comes the bride" (or something similar) sign.

You could ask them to be ushers or give them certain specific tasks to fulfill on the day. We only had 2 of 4 nephews actually in our wedding and no one seemed upset. All our nephews are between 2 and 5 though so there's a slight difference but they did all dress the same which was super cute!

We are doing ring security with three of our nephews. One is carrying a mini suitcase and the other two are his bodyguards. We even found them earpieces and badges. They are having so much fun coming up with their walk. They are 6, 7 and 9.

Could they have other "jobs", like passing out timeline cards (if you're having those), escorting the ring bearer (kind of like "ring security"), etc.?