At their school carnival, our kids won four free goldfish (lucky us!), so out I went Saturday morning to find an aquarium. The first few I priced ranged from $40 to $70. Then I spotted it right in the aisle: a discarded 10-gallon display tank, complete with gravel and filter for a mere five bucks. Sold! Of course, it was nasty dirty, but the savings made the two hours of clean-up a breeze.

Those four new fish looked great in their new home…