Planning my son's 3rd Birthday - help request!

For my son's 3rd birthday party - we would like to have a theme, of either Cars, Spiderman, dinosaurs... he also likes trucks.  We are leaning toward Cars - or maybe just a transportation theme.  I want to get him out of "Thomas" mode - do you think it is too juvenile for a 3rd birthday party??

I just asked riv if she can do a Cars cake topper, and I am watching some of her others (spiderman looks great!).  I am also watching some Cars themed items from overstock.

Any other sellers out there that want to help me out here?  ^_^

I am interested in party favors, filler, cake toppers, decorations, etc.

Any help in finding these things, I would appreciate!  Or if  you know any good on line party planner sites.

Just thought I'd come here first because you all make such lovely themed items (like toppers, and soaps with characters in them)

I am making the cake (ex-cake decorator) for whatever theme comes up/decided on.

Any other suggestions?

Thanks!

Keep me updated, via blogs & email if you find anything, or are selling anything under those categories.

Thanks again!!!!