If you want to put holes for nails in your walls you will need a drill. Drill at a slant. If they are textured walls (lathe and plaster), command hooks might not work. Funny story: My first house was built in 1917. The bedroom wall was wallpapered by the previous owner. After you took a shower, the paper would make sounds as it was on an uneven surface. It was really creepy the first few nights, until I got used to it.