There is a toilet in house 109 and one in house 110. Use your crowbar to break them, then leave the neighborhood and return. The toilets will have respawned. Repeat as needed.
You can also go for the breaking windows, breaking dishes, and the stealing toasters achievements while doing this. There are dishes that can be smashed in house 110 near the front door, and a toaster in the kitchen of that same house. These also respawn upon re-entering the neighborhood. Note that the toaster won't respawn unless you sell the one you stole previously. Also I believe you must successfully leave the neighborhood with the toaster for it to count towards your total.