Plastic edging - the flimsy/brittle stuff that's supposed to look like wrought iron.
Lazy spa.
Trampoline.
Solar lights - they look rubbish and dim after a year and can't be recycled.
Pointless lawn or area of grass that isn't practical for recreation (kid playing football for example)... Conifers - the most sad of all trees and they always outgrow the space. I cant be bothered shaving my legs, let alone grass and sterile trees.
Grey gravel - the cheapo stuff that looks like concrete chips.