I have some experience with this. I'm a mom of five and three are boys so I have made quite a few boy quilts. I have done the young eye spy with blocks and sashing. I did a homespun and old time sports theme trip around the world. I did a Halloween one because one of my sons love Halloween. i just did a Army theme quilt because his was the I spy and hes now 13 so hes outgrown that one...he still has it on his bed tho. My oldest son wants another quilt and hes requesting an outlined star quilt he liked the stained glass effect...but it will not be a bright one. I love homespun for boys because I think they are timeless but my boys have all different tastes. I also did a small dresser topper for my son with blocks that I call ninja star blocks and all the boys love those. Here's a picture of the last one.