What different types of decoupage art and materials are available?
Paper work is really cute and very cheap. if you want to do-it-yourself, you can use any type of wrapper, box, pictures from magazines and posters, even old wrapping paper. If you wish you can also do it with photographs.
If you would rather not do the fiddly bits yourself, search online for decoupage suppliers and kits, and have the benefit of the massive range of papers and designs that are available out there.
Almost any material can be used in decoupage, simply decide whether you want to create a flat or 3D finish. Once you have decided what your project is going to be, then you need to consider the most appropriate materials to use.
The general medium is paper, but you may also use fabric, buttons, dried or pressed flowers, feathers, beads, wood, indeed anything that will give an interesting finish when your project is complete. Simply let your imagination go wild!

