I use my cast-iron pan almost every day for searing meat, sautéing vegetables, and stir-frying, and I dread having to pull out my scrubber brush to remove all the stuck-on food particles during cleanup. Enter: The Ringer ($16, originally $25). A friend told me about this magical tool, and now that I've finally ordered one, I'm never going back. It might look archaic, but it does the job of 100 sponges and with less work on your part. One Amazon reviewer said "the product is genius!" and another exclaimed that "if you own cast iron, you should own this." So do yourself a favor and add to cart.
Related: 25+ Uses For Your Cast-Iron Pan