I’ve been designing a gallery wall (pictures on the wall), so I thought this topic could be interesting for you too. There are several options, one of them is that you put the picture frames directly on the wall, the other option is to put the frames on a special shelves (e.g. IKEA Mosslanda), or this two can be combined together. Pictures can be photos, prints, posters, paintings, and the best is if you combine all sorts together. Be creative with the colors of the frames and the thickness of the frames . Here are some examples :-).

Blue shows up on all of these pictures, the frames are put on the wall with equal distance between the two lines of the bench.
Blue shows up on all of these pictures, the frames are put on the wall with equal distance between the two lines of the bench.
Colorful, fresh design, a geometrical shaped shelf is also there. The frames are mostly white, but a few colored can be used two.
Colorful, fresh design, a geometrical shaped shelf is also there. The frames are mostly white, but a few colored can be used two.
This is a nursery room, but this design can be used in other rooms as well. Isn't this lovely?
This is a nursery room, but this design can be used in other rooms as well. Isn’t this lovely?
Only gold frames are used in different sizes on this wall between the 2 lines of the writing desk.
Only gold frames are used in different sizes on this wall between the 2 lines of the writing desk.
This design is beautiful with its simplicity, frames are same colors and sizes and it is not overcomplicated.
This design is beautiful with its simplicity, frames are same colors and sizes and it is not overcomplicated.
I love this, it's so cool. Black, white and green, different colored frames in unique composition.
I love this, it’s so cool. Black, white and green, different colored frames in unique composition.
Different sized and colored frames, and the green color of the sofa shows up on a few pictures.
Different sized and colored frames, and the green color of the sofa shows up on a few pictures.
2 variations for a wall, both looks great.
2 variations for a wall, both looks great.
Frames are placed on shelves, light colors are used which look amazing with the wooden shelves.
Frames are placed on shelves, light colors are used which look amazing with the wooden shelves.
3 white shelves are used, tasteful light colored interior.
3 white shelves are used, tasteful light colored interior.
I like this wall design a lot, there are not too many frames on the shelves and I love the big picture on the wall with the Eiffel tower.
I like this wall design a lot, there are not too many frames on the shelves and I love the big picture on the wall with the Eiffel tower.
Finally a few ideas how to create a gallery wall.
Finally a few ideas how to create a gallery wall.

Image sources: