Christmas...

okay so does anyone know what to get a guy for Christmas!? last year my husband and I kind of just shopped for our selves and then said it was from each other but this year I really do want to get him stuff he won't know about... girls are so easy to shop for.. jewelry, bath stuff, clothes... but guys are hard if you don't have an arm and a leg to spend to get him tools and things... hes a car guy, works construction, is going to be a daddy again in May, his favorite color is purple.... any ideas?