3m strips work great till you remove them. Even though they are " easily removed " we found that they will still pull the " wallpaper " off the luan that it is attached to and create a pucker. We even tried a heat gun to soften the glue and still got puckers. We found this out recently when removing hanging items in preparation to trade the TT. 3m strips hold great, not so great at releasing on our TT walls.
After some research we are going to try removable acrylic clear mounting tape. Can't comment on it yet as we have not tried it, GF ordered some for the new TT.