If your deck or patio is partially covered, drape lengths of fabric or canvas between the joists to create shade. Space out the pieces of fabric for a more transparent look, and add lights to illuminate the space at night.
spinning compost barrel DIY--A compost bin is a necessary companion to My new garden. This one is less eye-pleasing, but doubles the composting with a stacking system. The darker the barrels, the warmer they get, which is what you want with composting.