GardenSkill Bamboo Bell Cloche - Garden Plant Protection Cover for Fruit Vegetables Flowers (0.3m diameter x 0.4m high, Pack 5)

Very lightweight but they survived delivery only wrapped thinly in bubblewrap so they're sturdy enough. I'm actually using them to cover weeds when I spray them so the dogs can't go near the weedkiller. They work perfectly for that. Because they're light I have used some tent pegs to keep them anchored if it's windy. They're quite big for 'small' (approx 30cm diameter and 40cm tall).

Prongs not long enough to stop them blowing around

These seemed expensive, but they are well made and should last some time. They do need pegging down , otherwise they might blow away!