I used to lose those stupid white plugs constantly. When I put the filled jug upright into my frame, the pressure on the sides of the jug would jettison them into space. I have a friend who just stuck screws into the vent holes. They still work, but are slow to pour from. Now I use the scepter jugs with the attached air vents. You twist them up for use and down for transport.
"We are all visitors to this time, this place. We are just passing through. Our purpose here is to observe, to learn, to grow, to love....and then we return home."
Australian Aboriginal Proverb