"Save product in Safe Storage" option & different TAX for same product

Hi everyone, I was hoping to get some help here. I did try to find some settings in Shopify and apps in the store that can help me with this, but without any results.

There are products that can be kept in a safe storage for the buyer, instead of shipping them to the buyer. Is there any option to achieve this with Shopify and if yes, how should I do it? The customer should enter at checkout all his data as usual, but the products that he wants to be kept in local storage, won’t be shipped to him.
Also, for some of the products that should be kept in a safe storage for the buyer, shouldn’t be applied TAX. Means, if the product costs $10, the buyer will pay $10 + %tax if it is shipped to him, or only $10 if it is kept in safe storage.