Big box home centers (home depot, menards if you have one, maybe Lowes which we dont have) have removable cling type window coverings, some with patterns (ie flowers, wildlife, stain glass look, or your regular smoke look), we put some up in our laundry room and lower half of bedroom
windows. My
Scamp has the privacy glass in that window and we have a Maxx vent over the opening part so we dont have any window covering. To be honest I dont know how reusable they are if removed regularly