For those of us who prefer to do our own vehicle maintenance, Amazon's running a killer promo on Bosch Spark Plugs. Good plugs are simply not cheap and they are rarely on sale, so this rebate deal is a no-brainer in my book.... and a nice reminder that at least one of your vehicles could likely use a tune-up. The rebate form is for either $3 or $4 off each of the plugs you buy up to a total of $24 or $32 depending on the plugs you buy.