The Home Depot offers free workshops for do-it-yourselfers of all ages and experience levels.
Here's the link to the Kid's Workshops, which take place the first Saturday of each month.
See comments for upcoming workshops. In April, visit Home Depot on Saturday, April 6th and build a bird feeder! In June, it's a fun lawn mower pencil holder! And there will also be some surprise crafts in some other months.