Making custom fields sticky

I recently started fiddling around with the custom fields portion of WordPress, which is great.

What I’m looking to do, is each time I write a “page”, have the custom fields displayed, in the same order on the “write” page, each time.

I realize I can use the drop down, and add each one, each time, but that would be time consuming for a page with 15 or 20 custom fields.

Is that possible? If not with WordPress itself, maybe a plugin? I just don’t want to have to use the dropdowns to enter the same 20 custom fields each time.