What are some creative bedroom designs that every kid will surely love? Would you please give me tips and post pictures?

As every kids would love, a cartoon characters indeed with a light colors that's soothens their eyes

children preferring having a lot of colors in their room. make the room more colorful but keep in mind to use light colors like pink green blue etc so that it would not affect their sleep.

Dino's, cars, ..kids love them 

Minions

Pirates,

Thema DEPENDS, a boy or girl

Kids Bedroom Non-Sharing:   For Boys I will suggest some subtle design which should indicate his choice of color (Ask him), and our thoughts as well of what kind of comfort a parent wants to give the child.

Example:

Colors like Blue (Navy, Royal, Sky etc.);  Grey (Refer Shade card) not too dark and not too light.

Lighting in the room should be bright and white, to compliment some stencils that are again his choice (Ask him to Choose).

Storage lots of it but surrounded around the room and not cluttered all over.

Flooring (Big no for carpets) make it attractive twin colors or so. 

Bed Nice and cozy low height bed with some opposite color to the walls. Like if u use grey for the walls go for Blue for the bed. For shared room of 2 or more kids off course i would recommend same only the size of the room depends on the bed type, say Small Room prefer bunker beds an for a larger room two floor beds with again opposite colors of their choice.

Girls:    Mostly girl kids like Shades like pink, magenta, purple which look attractive and girly.

Bed       should be like a princess or a Tom boyish what she prefers as per likes.

Storage lots of it but surrounded around the room and not cluttered all over.

Floor     White or a lightest grey just to settle with these colors. Again (no woolen carpet) instead you can give a colorful bed side rug with nice rubberized grip in the bottom which is easily available in the market.

Lighting should be bright white with some colorful LED strip lights if you are planning false ceiling, or behind the dresser mirror or under the bed (should be hidden)

I have given you Ideas what you can do to plan and execute.

for details go for realistic rendering after planning your ides on paper. 

i advice u to see picture in internet if u designer and start ur design if u mam go to   desinger and he will give u  design u want 

....................I can but here difficult 

it depends on there gender , traits and age