I have organized storage in the trunk of my car and use a tote only to take samples to each client BTW if you are just starting out take my advice and keep choices to a min. for your clients or you will be crazy in no time. I have a tote that I carry my cell, a sketch pad and pencils , a measuring tape and that is all I take on a first visit. I also tape my conversations with permission so there is not confusion down the road. I use one sketch book and notebook for each client

You can’t haul all of that in a tote bag. You need a rolling cart. Look at rolling sample cases, beauty trunks, skaters cases, etc.