[nicmarlo]

plaster?

How about something less difficult to cart around for when they will likely become unruly???

hmmmmmm

[bannie]

You know that stuff that comes in aerosol cans that fills in spaces around packages to mail? It’s lightweight.

Still, I like the thought of heavy, nasty, messy plaster...

[dcwusmc]

How about a tube of RTV silicon sealant? Easy to carry, easy to use...