Motorcycle theme for baby boys 1st birthday. Where can i find stuff for it.?!

My husband wants a motorcycle theme for our sons 1st birthday. Where the h*ll do we find party supplies for a motorcycle theme and yes i checked oriental trading co but their stuff was cheesy. There will be a moon walk and food and a pinata and our bikes will be there but where do i find the plates and the pinata and so forth? there will be a few kids there but this is mostly adults and the birthday boy. any food ideas it needs to not be fancy or expensive since because of the theme and number of guest which will be about 50+ where can i get a cake done where it wont be that nasty tasting sheet cake with the crappy icing? or where can i find a kit to do the cake myself?