looking for Grae's room Small Space Living: Double Duty Ottoman Shopping Guide
DIY Diamond Tufted Storage Ottoman Tutorial, maybe this idea on the storage benches?
12 Creative and Easy DIY Furniture Hacks - For Creative Juice DIY Ottoman with Storage: This DIY ottoman is easy to put together with some cheap wooden crates and gives you additional seating and storage at the same time.
Buy the beautifully designed Buttons Grey Ottoman, by The French Bedroom Company. Shop 24 hours a day for Effortless Luxury Online.
Buy John Lewis Croft Collection Skye Ottoman Blanket Box from our Chests, Trunks & Ottomans range at John Lewis.
Make your own DIY storage ottoman from scratch I would add piano hinge and slow-close supports to keep the lid from falling off when moved around, etc.