1. Make stale cereal, crackers, chips, and popcorn edible again by toasting in the oven.
Spread stale snacks in a single layer on a baking sheet and pop them in a 350-degree oven for 3-5 minutes.
2. Condition wood surfaces with expired mayo.
The oil in mayonnaise helps moisturize solid wood tabletops to restore moisture and even remove water stains.