Colour Pencils
What kinds of nice locker decorations can i make with paper, pencil , magnets ,tape and colour pencils ?

How about customized origami? You can make your own art designs on the paper, then fold it into stars, bows, and other cool things. There are a million examples on the web, with instructions. Below is just one link. You could then use the magnets to attach your creations to the locker.

Top colouring pencils product: Sanford’s Karisma Colour Pencils: Review and Recommendation