For DD's preschool artwork, it's usually seasonal, so we put it up as decorations (on the fridge, mantle, or just taped to the wall) and then dispose of it after a while. Really cool stuff I keep in a large expandable file -- I have one going for each kid, but I probably only save 5-10 items per year in there, so it's not overwhelming.
These days, DD is a very prolific artist at home, doing many pages worth of "writing," coloring, and drawing at home, so I bought a large pad of newsprint for her to use and told her that it's like her very own art book to discourage her from tearing out each page as she finished. She still tears out a piece here and there, but mostly she's gotten pretty good at leaving the pages in the book, and it's fun to be able to leaf back through it and see all the stuff she's done (and it's nice and compact!).
[quote]Can you guys tell a little bit more what your child usually makes (on his own without your guidance). Besides drawing his favorite things like cars, trees... does he tell you a story about his work?
Also, which kind of drawing/coloring tools he uses? (coloring pencils, brushes, crayon...)[/quote]
DD's drawings often have something to do with what we did that day, with lots of fantasy elements involved. So if we went to the grocery store, she might draw a picture of us at the grocery store, but Minnie Mouse will be with us, and the watermelons will have antennae, etc. Most of her pictures are of our family doing something together. I mostly gave her crayons for a long time, but she really preferred to use a pencil, so for quite a while all her pictures were gray. Then it finally occurred to me that, duh, they make colored pencils, so I bought her a box of those and that's mostly what she uses these days. She's really into cutting and taping too, so I've been giving her my scrapbooking scraps to play with and she likes that.