Mail Bomb Suspect Reportedly Had List Of More Than 100 Potential Targets

He was looking for attention and he got it.

And not one worked - The stickers on the van were "sheet decals" made up of hundreds of pictures that were fitted unto a single decal which covered each window's glass, completely covering the surface. The bomber's neighbor's reported his van did not have the stickers three days before his arrest
These had to be made by a printing company that used large complex equipment. There has to be a paper trail plus the decal sheets have micro-printed labels

And some of the bombs are still turning up, CNN received one.