Houzz is the new way to design your home.
Baluster and railing
Fun vertical wallpaper on stairs
Wallpaper understair triangle
Simple metal rail
Railing pattern with wood on top. My favorite so far. Fits with house style and existing sidewalk rail in black metal.
Grid -- although maybe more simple
Railing especially bottom edge the way that it is molded to tread
Make stairs open underneath with wall in utility room. Carpet or tile floor and store bean bags underneath.
What about a pretty starburst as a replacement for the wall
Vertical posts of maple to match shelves
Simple, one post per stair railing
Nice with pop of black
Modern Decals - $87
Inspiration for railing. Alternating long skinny triangles.
Straight edged treads and risers overlapping wall by 1-2"
Half wall bannister and dark stairs
Hidden bannister fittings
Railing with metal rods and wood on top
Vertical bannister to tread
Grid wall cut outs
Stairwell half wall