Most homes will have coloring pencils or crayons. In my house we also have glitter pens, foam pens and most importantly paints for the kids to select between. Using paints will require a little bit more setup time as you may need to clear an area and lay newspapers down over the table to protect it.
We live in a capitalist society where the value and price of any given commodity will be directly determined by the interrelated concepts of supply and demand in that the more readily available a particular resource it is, the less it will cost the purchaser and the converse is also true which is why gold is far more expensive than the likes of coal.
At special occasions like the Holidays we pretty much blanket the walls of our house in Coloring Pages. In December there are pictures of Santa, Rudolph the Reindeer, Sleighs, Christmas Trees, Elves, Carol Singers and much more all over the house. While at Halloween no matter where you go in our home there will probably be a Pumpkin, Bat, Little Devil or Ghoul staring at you! I am careful to pack them all away carefully afterwards and intend to still be using them decades from now, much to the probable embarrassment of my son. So if you are a parent and are looking for easy and low cost ways to spend quality time with your children I would say use Coloring Pages, you really can't go wrong with them.