costume ideas?

I have made 2 Transformers costumes in the past year and I am looking to start my next. This time I really want to go all out. I want to do something different but not crazy(read low budget). I was going to make Ironhide but as cool as he is I just wasnt very inspired with the project and decided to set him aside for now. What I could use if anyone wants to help is a good brainstorm session. I will of course share pics once things get started. Thanx! 
