Do you allow your kids to use ordinary utensils or you let them use plastic ones instead?

I am using calibowl for my kids. I like it as it is non-spill, it made with non-toxic, BPA-free, recycled plastic. It is very durable also. Thus, I will choose this over normal plastic utensils. You can get calibowl in different sizes and colours from Mothercare. http://calibowl.com/