Paneling too short
 

Help please paneling only 8ft long wall 9ft tall ...What can i use to fill in?

One idea is if you use a chair rail type trim this can be a seam (you will have much scraps though) you would put the chair rail molding about 3' high or so. You could get two lower panels per sheet but only one top per sheet. This was my first idea not knowing what type of paneling or what decor you are going for it just seemed the most obvious solution.

open space at bottom
 

the paneling goes to the top leaving open space at bottom toward the floor. house is 87 yrs young thank you for idea