Party bags for 10,12 yr old boys

[applepie007]

We are having a low key wedding and I am making party bags for the younger children to keep them occupied (quiet) during and after the meal, but I know my two nephews are older but I don't want to exclude them so wanted some cool party bag ideas - has anyone got some good ideas ?

Thanks

Are you ever too old for Lego? Or mecano if they still make that? Perhaps even a group effort type thing per table, like a plane or boat or car or something big or electric? I don’t know how you’d split it to take home after right enough unless it was siblings only who made it!