DVDdoug:
For the seven 220 V/0.5 A outputs you don't even need relays. Since the current is only going to be about 0.5 A, a MOSFET rated for 250 V would suffice...
MOSFETs don't work with AC. (You could do it with a pair of complementary MOSFETs on each output, but would get "messy".) Plus, he needs some "safety" isolation between the 220V and the Arduino.
True, even though it wasn't explicitly stated that these inputs would be AC, I should have recognized that the heaters mentioned in the OP would be operating on AC. However, the necessary isolation can be achieved without relays, e.g. through opto-isolators that I mentioned for a different set of pins.
eugeniusz:
Far-seeker, "homemade pcbs" are pcbs I need to made by my own hands - trace, print, solder etc. Since college I hate itI want to isolate controller and heater circuits, so mosfet is not acceptable (DVDdoug, thank you for note about AC, I never had known it).
Well having to solder is a requirement of putting together parts on a proto-shield, regardless of the presence or absence of MOSFETs. 
However, I think you answered my question sufficiently. Instead of the proto-shields, look for shields with SSRs or mechanical relays although I don't know of any with that many on one shield so you might have to get creative with your wiring...