Blue Your Blooms | 34 Unexpected Ways Coffee Grounds Can Make Your Life Better - Some flowering plants, like hydrangeas, change color depending on the pH level of the soil. Adding coffee grounds will reduce the pH level and give you bright blue flowers.
Cement Hand Planters. Pour casting concrete into rubber gloves, being carefully to remove air bubbles from fingers. Mould into position working fast before concrete sets. When set, peel of rubber gloves revealing your concrete planter.