There are several websites on which a person can make his own personalized bingo cards. Teachnology, BingoCardApp and DLTK Cards each have online bingo card generators that create custom cards in various sizes.
Teachnology offers a 5 x 5 bingo card maker. Website users simply need to input a list of 25 words or phrases into given spaces, then a bingo card that includes the commonly used free space will appear. The card can be printed out on a 5 x 5 index card or other type of paper in that size. BingoCardApp uses a similar software and its website notes that their card printouts do not contain any watermarks or ads.
DLTK Cards allows users to create 3 x 3, 4 x 4 or 5 x 5 picture bingo cards chosen from a variety of available children's themes. The website goes on to list other options, printing out blank cards and stickers to make more personalized versions. Other suggestions from DLTK include laminated cards, printing them on heavy paper or gluing the paper to a piece of cardboard to allow the cards to remain in good shape over time for multiple game plays. The site also offers tips on how to add extra fun elements to the game.