Anticipating my first potluck challenge...

It's only Ash Wednesday, and I'm already looking nervously ahead to Saturday's potluck - a joint meeting of the Grupo de Libros and the Women's Book Group.  How can I afford potluck on my $50/wk?!!  But fortunately yesterday was Shrove Tuesday, and I commandeered some left-over ham from our pancake supper, which I'll put into a scalloped potato dish...  potatoes I can afford (I think!)!  All these things we take for granted, and now we can't...