whats your best storage tips idea or advice on what to invest in round the place long term items

thoughts ideas would be very use full.

recently needed more seating in lounge altho our lounge room is so small so bought two ottomans that open up to toys box's inside and have stashed my wool in one and baby toys in other and also used these to block of the lounge so josiah does not get loose.

was thinking of pantry cupboards instead or draws for kids as it's taller and could store more? we also own space bags too and have been donating lots of stuff.