Create Gift box in woocommerce

Hi,
I am running a wordpress eCommerce site for nailpolish cosmetics.
My client wants to add a gift box option, User click on gift box like adding a single product to cart, then choose any 6 products from available products then complete the order.
-Box should have capacity to add maximum of 6 products.
-Box price will be calculated for six products in our case all products have same prices e.g $1 x $6=$6.
Box option should be visible to products page.

Please help me out for doing this…
Thanks