Enhance an existing set of website icons

This is what a business in United States was looking for in their icon design

I need to enhance/re-create and replace 16 existing web icons I have on my online web application. Each 16 will need to be in three different dimensions (16x16 px, 48x48 px, 100x100px) and will need to be transparent.

I've attached a PDF of the 16 icons and the representation that they currently have, as a reference.

I'm looking for creative enhancements that will bring these icons more inline with modern icon designs. Read more