Colgate Plus Toothbrushes are on sale 10/$10. I believe last week's or the first week of Feburary had a coupon for .75/1 Colgate toothbrush. I got a free toothbrush since my local King Soopers doubles coupons.
Another deal I found was for Crest Pro-Health Toothpaste 4.2oz. There are two Crest toothpaste coupons - $1 off selected varieties of Crest toothpaste and another for .50/1 Crest toothpaste - both of the coupons are for 4.2oz or larger. Crest Pro-Health 4.2oz are on sale for $2.50. I used the $1 off coupon and had a coupon for $1.50/1 Crest Premium toothpaste downloaded to my King Soopers card from pgesaver.com. Ended up with a free tube of Crest Pro-Health with the combined coupons.