If you need a stronger magnetic surface, or you need to use a different type of paint in the room (like waterproof paint in a damp basement), there are other accessible options. You could fit a steel panel over the wall, try magnetic wallpaper, or apply chalk paint instead. 

If you want an inexpensive shortcut, hang a pinboard or chalkboard on your wall. These removable options are ideal if you’re a renter who can’t repaint or plan to move in the near future.

Yes, you can apply peel-and-stick wallpaper over wood paneling, but it requires significant preparation for a good result. Peel-and-stick wallpaper has a weaker adhesive than traditional wallpaper and works best on smooth, non-textured surfaces like painted or primed drywall. Because wood paneling is often textured with grooves, any flaws in the underlying surface will likely be visible after application. To prepare the paneling, you must ensure the surface is free of cracks, holes, and protrusions by filling any indentations and sanding rough spots to create a smooth surface. An alternative is to remove the paneling and apply the wallpaper directly to the underlying drywall or plaster, provided it is in good condition.

White walls are considered a classic and timeless look and will most likely always be in style. A white wall easily blends into any type of home decor style which makes it a suitable option for most homeowners. Another appealing quality about white walls is that if it's not a color someone is going for, the color is easy to paint over.

When comparing peel-and-stick and traditional wallpaper, the better choice depends on your specific needs and space. Peel-and-stick wallpaper is more budget-friendly and easier to DIY install. On the other hand, traditional wallpaper lasts much longer and holds up better in a wider variety of spaces, including areas with moisture like kitchens and bathrooms.