The Friendly Swede (TM) Bundle of 3 Snap-On Zebra & Peace Sign Hard Cases for Apple iPod Touch 4/4G - Branded Stylus - Microfiber Cloth - Retail Packaging
Got thes for my 7 yr old. For the price they were fine.  It took a little squeezing to get them on and a little fingernails to get them off but they held up fine.  The plastic is hard but not the cheaper brittle type.  Overall this was a good purchase.