Double sided printing. Back is printing with a matching pattern. Cut out each flag (there will be a design on both sides), punch 2 holes near the top and string with twine. Alternatively, you can make 2 slits near the top and thread with a wide ribbon. Add individual letters to spell a name / message and patterned spacers to create your own customized banner. Buntings can be used to decorate tables or hung on the wall as part of your party decoration.
Check out my complete "Boys Toys" DIY party decoration set. This design can be adapted to suit a boy baby shower. If you have any questions or need help with customization, please send me a message. Custom charges may apply depending on the level of customization required.