Did those coupons come in your newspaper insert or did you hunt for the coupons? I've never done the online thing, coming here is my limit of online exposure, so my couponing consists of a cup of coffee and scissors Sun. Wed. & Thur. Guys, I estimate it takes zero time from my life because that cup of coffee and I is quite time and clipping a coupon is pretty quiet.
And like you I only buy items I already use, therefore if it's on sale I buy it and either use it now or later. Some of the paper items the good deals can be more than 6 weeks apart. Anyway, inflation is coming so it goes in the pantry or attic or where ever (stock pile). Even now with "no" inflation it's as good or better than a 6% CD.
The scissors: I know the store floor plan, I cut the coupons, put them in order to the route I walk through the store, paper clip and there she goes.