50641 Icons For A Directory!

I need 30 icons for my directory project! Like an icon for: cars agriculture forest import / export real estate and so on! These icons could be: a) stock icons you have b) original icons To have a better idea of what I want and of what I don't want you can go to: [login to view URL] The square icons on the left side (in deep yellow) reflects a profesionalism that the 2 icons on the left don't (cup of coffee and the bread). All the same basic color, all the same style, simples, fast to download, and most important,that will reflects in one sec, the directory subject! Just imagine a directory with no words, but icons so good that any users would know what it is all about! I am willing to put on the search page at the bottom of the search page "Icons Designed by..." as my budget is limited! Thanks! Roger