Funny thing, I thought boho = clutter but, no. If you pick wallpaper with soft motif scale, muted tones, maybe one accent wall only, it gives warmth and character without ruining minimalism. I used one leaf-print design, pale sage green and beige, subtle raised texture. It softened the coldness of straight lines, metal frames, bare wood. Anchored by keeping other walls blank, accessories few. The boho styles at https://costacover.com/collections/boho-wallpaper provide some options that arent loud, they whisper rather than scream perfect for minimal spaces.