Need Construction Theme Party Ideas

I`m also doing my 2 year old birthday construction.

I found rubber balls called bouncing boulder they look like rocks. Also someone had mention buying nail aprons at a hardware store and stamping a dump truck ect on them... To put the party favors in. I ordered inexpensive plastic construction hats off the internet. I have been searching for some cheap plastic tools... But the ones i have found are to expensive for favors.
Feel free to e-mail me and we can trade ideas. Good luck