Go here to get a free Scrubbing Bubbles Fresh Brush 2-in-1 starter or refill kit free when you buy a toilet cleaning gel (typically around $2.50). The quickest way to find the coupon is to click on "Household" on the left hand sidebar and then look for the scrubbing bubbles logo.
Go here to get a coupon for $10 off a Scrubbing Bubbles Automatic Shower Cleaner starter kit.
Go here to get a coupon for a buy 1 automatic shower cleaner refill get one free.
And lastly, go here to get a free refill with purchase of an Extend-a-Clean power sprayer starter.