My centerpieces are done for the Woodridge Football Fundraiser! Dollar Tree bud vases filled with sand, cement glued to foam football (with a little carving out) and spray painted silver. Great Vince Lombardi replica for $2 each!
Four mirror tiles and one ceramic tile (for the base - cheaper than a mirror tile, especially since the bottom/inside won't be seen anyway); glue felt on bottom to keep ceramic tile base from scratching furniture, countertop, etc. This would also make a pretty container for makeup brushes on a vanity - just put cheap (but pretty!) beads inside, then stand your brushes up in the beads.