They say no question is stupid....ill let you be the judge! hehe

Now I know I haven't read all there is to read about this sport, but I can't seem to find anything about this so maybe you long timers in the sport can answer this for me.

I have noticed a wide variety of items attached to travel bugs. Are there any things that are not allowed to be attached to a bug. Of course I dont mean something crude or inappropriate, I mean as to weight or size. I have seen some intresting choices to attach and just wondering in case I should ever get a travel bug of my own one day. The majority of them are related to the goal of the bug but some I admit confound me. Does there have to be a reason or can you just put any old thing on it??

Thanks in advance