After having removed the blinds and valances, then installed white roller shades, I wanted to create some sort of valance and also create a way to darken the area further at night. Many years ago, I had sewn panels to mount over the blinds at night using velcro. Since they were already the right size, I adapted them by sewing rings on the top and hooking them onto cup hooks mounted underneath the cabinets. I can roll them up and secure them with ribbons, which can easily be untied at night. Not gorgeous, but functional.
A single set of cafe curtains and valance came to the rescue for curtains. They help the light when they they are closed, but I might still put a black-out fabric backing on them.
There was also a window by the door. I covered it with a piece of vinyl too. The curtains are over the door so I can keep it open at night. They aren't long enough to hit the floor but that doesn't bother me because that lets more air in and that side of the trailer is darker anyway. No one can see in and it's easy to get in and out of the door when we need to.
I used the valance from the set over the small window. Once I straightened it out (sorry the picture is a bit sloppy), it looked fine:
These are rather lazy solutions, but we hated the blinds and wanted them out. I still have a window over the bed to deal with but will save that for another weekend.