To make a wonderous item like elven boots, does the creator himself or herself have to be the elf? Could a collaborator be the elf?
But elven skin makes poor leather and you will get low quality boots.
You'd be better off making slippers.
I also apologize if this seems to be a munchkin question and that is what has triggered the humourous response.
An item that grants +10 to a skill is worth 2000 GP (Bonus squared X 20 GP). Just design something that fits your PC and get it approved by your DM.