Party Theme!

So I have determined what D's party theme will be. With help from friends and family and of course taking into account my little man's own preferences I have come up with theme 'Under Construction'. Dylan loves all things having to do with cars and trucks and dump trucks, so I thought this would be a fun play on the things he likes :).
A reccommendation of party city and a link from a friend showed me there were TONS of stuff I could purchase for the party. I love THIS pinata and think it will be a fun semi organized game maybe even 2 year olds can handle. I was also thinking about filling a plastic pool from Walmart or the like with dirt and getting some trucks like THESE for the kids to play with in the pool/dirt outside whateverness.
As far as food goes, I haven't quite decided yet. I'm debating between pizza, hotdogs or chicken nuggets. What do you think? All three of these are a favorite of D's. Cupcakes are a must, they went over so well last year...but haven't finalized the ideas on those. And of course we will have balls and bubbles, because these are essential for D to play outside. No balloons or streamers or fancy decorations. I will probably get a solid colored plastic table cover that I can tape to an outdoor table, and get some special underconstruction napkins or cups and plates to complete the party decor. What do you think? Not necessarily fantastically creative, but I think it encompasses Dylan and things he likes to do.