I usually use bamboo skewers and they work great. I want height to my cookies that are in the back. I have never had a problem with them. I have baked the cookies with the skewers inserted before baking as well as placing the skewers in the cookies after baking. I prefer prior to baking. The skewers are easily cut for differing heights.
I have just started using wooden coffee stirrer sticks. They come in a box with around 1000 sticks for less than five bucks. They work great. If I need height, then I just wrap a second stick after decorating. I prefer this to the sucker sticks because they don't spin. I use the bamboo skewers for my smaller accent cookies. These are great when adding small butterflies and flowers to boquets.
I use sucker sticks. I have found the wooden dowels too think. And those of you with the bamboo...are you talking the ones you use on the grill? Where do you get them....are they strong..like would withstand shipping shakes?