Chunks is a word building game- great for learning sight words and beyond.
Math Dice, Jr. for making addition and subtraction automatic and fun. This will be in Isaac's stocking this year.
Spot It! Not only a good stocking stuffer, but also a travel-friendly game that helps work on matching and PAYING ATTENTION! My distracted five year old will be pulling this out of his stocking this year, too.
And if you're really holding out for a future engineer, you can't go wrong with the nerd-tastic gift my husband picked out for
himself Isaac: an Erector set.
Happy shopping, my fellow over-parenting friends!