here's some flannel for boy sites...so cute!! Just about everything..great ideas for me too!! Haven't seen 'construction' vehicles in flannel just cotton...here's some different flannel for boy fabrics ..You might find what you are looking for at:
http://www.gotfabric.com/SearchEngin...nel-fabric.htm
http://www.jerisquiltpatch.com/kidsholiday.html
http://thecalicocat.com/fabricsflannel6.htm