Notice you have categories but have omitted brands/manufacturers. I feel this is quite a simple addition and yet not a part of your store.
I think its good to have categories and this as well, allowing me to place products by their type and also by who made them.
Effectively you could deal with this simply by having it treated like a category. I place my product in its defined category and also choose to put it in a brand or manufacturer. The end user can then very easily pick from the store what he/she prefers, search by brand/manufacturer etc.