Don't assume they will be on the same developmental level as what you used to be at 10-14. Some will act more mature and some less. Seems like abused kids grow up too fast or refuse to. Keep in mind these kids typically have education issues (but other types of smarts) so activities that are physical or do not involve reading will be good ones.
Here is a link of some online crafty sorts of things
http://familyfun.go.com/arts-and-cr...er-camp-crafts/
One thing my boys like is beans. You can buy a bunch of different kinds and colors, get some old jar lids and paint them with spray paint then just pour in some glue and let them turn them into mosaics. Better, because it requires fine motor, for older kids. You could get magnets for the back of them. They would be able to take this where ever they go.
Another cool activity that I have seen and kids loved it is also a lesson on symmetry. Print pics of animals off the web (color) but make sure that when you cut off half the picture a kid could make the other half. In other words faces of animals looking head on work best. Let the students try to create the other half and color using colored pencils.
Game- my kids love "Quiet Ball" kids stand on chairs silent and they toss a foam or small ball. Talk=out, bad throw= out, missed catchable throw=out, arguing over a call= out. Last one standing wins. If it get to take too long make them do it one hand behind their back.
One thing you may want to try is to get pictures of the kids. They may not have many of themselves. You could do the old standby polaroid pics and make frames.