Yes, my first thought was also Warm Wishes because it is fast and easy. But what about a pieced Firetruck using your red fabric. You could make it more personal by putting Grandpa's fire station number on the door. It doesn't have to be an exact replica. I just did a Google search using "pieced fire truck pattern" and there are a bunch of really cute images. You could use the yellow fire truck fabric as background, or backing or if Grandpa's firetruck is yellow....lots of ways to go here.