Use fabric. MOst people use banner paper as their background color. One of the many complaints is unsightly bulletin boards. After the pictures and announcements are taken down, the board looks like it has a bad case of pox. Instead, try using a simple patterned and nuetral colored fabric. You can staple the edges so that the fabric is tight and cover the edges with regular paper borders of your choice. You can change it out every couple of months, or whenever you wish. You can keep the background and change the border and accents to go with the seasons is you wish.