If you’re going to use stickers, it’s best to think of a particular theme first. Choose large stickers if you must. You can get inspiration from your favorite cartoon characters. Another thing about stickers, they are removable! When you get tired of them, you can easily remove them without having to spend money for repainting.  Stickers are self-adhesive wall decors, they stick with flat surfaces and can also be used in windows, mirrors, and or even floors. I saw them in DIY stores and I think wall decals are the right term to use if you’re going to ask the salesperson

I have gathered few possible options that might help if this is the case and they are:

1. Drill A Hole Anyway
Well if you really like to hang your favorite portrait, try drilling a hole and promise your landlord that you will fill-up the whole anyway the moment you move out. Just be sure you had their approval before risking being thrown out.
2. Lean your paintings against the wall
I already saw this concept to some famous houses featured on TV shows. They just place their painting on the floor or tables.

3. Paint your walls
Try maximizing the use of wall paints by doing some artistic accents to liven up your wall.

4. Accessorize

Make use of ornamentals and tall vases instead

5. Be creative and artistic

Instead of using framed pictures or paintings, try using cloth, poster or tarpaulins. They can look stylish if done creatively.

6. Liquid Nails and Double Adhesive Tapes

You can use adhesive tapes and liquid nails but the weight of the item you will hang is limited only to a few grams.