You can search for that perfect souvenir at Sam Levy's Village during your stay in Harare. While you're in the area, wander around the gardens.
You can do some window-shopping at Avondale Shopping Centre during your stay in Harare. While you're in the area, wander around the gardens.
After visiting U.S. Embassy in Zimbabwe, make a plan to see the other sights and activities in Harare. While you're in the area, wander around the gardens.