Spiderman birthday stuff?

[needtoplan]

My son Caleb turns 4 in July, and we are having a spiderman party. I'm looking for spiderman t-shirt designs and designs for favors and/or decorations.
I have invitations already.

Any designs out there? I'm sure there are, but I seem to be having trouble finding them.

Thanks so much in advance for all your hard work.
Any help greatly appreciated.