You could probably pick up another $5 gift card or two on the $36 filler on another one of those Target promotions. Last time we were in there, we got $10 in GCs from toilet paper and paper towel purchases.
Since we don't have a Costco around Target ends up being our stock up place for those kinds of things, and by the time we need to replenish the stash, they seem to have another $5 GC promotion going on.