working on sharepint 2010

I have a sharepoint project .I insatalled a sharepoint on my computer .I want to create list on my computer and then deploy to customer enviroment. My customer didn't give me any remote desktop connetion to me and I should go to customer office for creating list and implement sharepoint. I want a way to work offline,working on my sharepoint server and then transfer to customer server. A way like site template.But site template has a problem , if I create a site from a site template I can't change it and deploy another another template. Any Idea?