Bamboo screens will roll up and down so as to protect your doors and windows. The bamboo screens are reasonably priced and are easy to install. They generally take three or four hooks installed over the door. The screen clips onto the hooks is rolled up or down as needed. Drapes or curtains could be installed on the wall inside the door frame. Hanging rods and hardware are obtainable at hardware and department stores. Heavier drapes will be expensive and can be more challenging to install. Lightweight curtains take a simple rod and could be quickly pulled to one end and tied.
Holiday door covers are a fun and a fast way to provide privacy. These huge decorative vinyl decorations are meant to cover your front door. They are available for you at dollar stores and department stores. Use removal tape to put a colorful or serene picture over the door. They are cheap and could be changed with the season. Temporary privacy could be a family project. Use a butcher paper cut and taped to fit the door. Make it a family project to poster paint designs on the paper. You can use a felt pen or brush to paint the lines in a grid on the paper like panes on a window. This will make individual blocks for every person to do their design. When the paint dries thoroughly, then it can be put on the door with removable tape. Though this is not a permanent solution it can provide a few days of family privacy and leisure.
Sun films could be installed on patio door glass. The shades come in light to dark film. You can look out but it is not simple to see in. Light adhesive will hold the film in its place. Sun film must not be installed on thermo pane windows as it might affect the warranty. Better check with a commercial installer who provides a separate warranty against damage from sun film. Tinted PVC or vinyl film is also capable of providing privacy and is carried by some fabric stores. It is less luxurious than sun film and is held in place by static. Just put it up on wet doors, squeegee it in place, and finally peel it off when you do not need it. As with the sun film, tinted film could also affect the warranty on thermo pane windows.