29 Under Kitchen Sink Storage Ideas To Increase Storage Space In Your Kitchen. 1. Expandable Kitchen Under Sink Organizer. This expandable under kitchen sink-organizer does a great job of storing basic kitchen things like sponges, liquid soap, etc. It isn't advisable to place food items under your kitchen sink. Get a few plastic containers and keep them under your kitchen sink. You can use these plastic containers to store any kind of item. It doesn't necessarily need to be a kitchen appliance or item. You can store a few craft supplies or something else here. Under Sink Storage Ideas to

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storage ideas for under the kitchen sink