You can try this... format the cells in the normal 5 by 5 bingo sheet (or
whatever you want). Change there sizes, colors, or whatever to make them cute
for your baby shower... haha
But then in the top left cell type the formula
=RAND()*65
Change the 65 to the max number you want allowed on the bingo sheet. If its
40 then do Rand()*40
Copy that cell to all the other cells on the bingo sheet. Create a printable
range and then print it.
Then go in to the upper left cell again, make sure you click in to the
actual formula and click enter... this will recalculate all the cells again
creating a new random bingo card.
You can even go to kinkos to get thicker paper or something, but just keep
creating new sets of random numbers and printing them off.