We have 2 open wooden type heaps with an old rug covering. I don’t like those plastic things, but they are better than nothing.
They are great for attracting wildlife, frogs, birds, hedgehogs etc.
When one is full start another up. Remember to turn regularly and under no circumstances put in anything that a rat would eat (left over table scraps, dead animals etc.) or dog poo. I don’t add twigs or tree branchs either.
Also some stuff may need cutting up a bit before popping in. like certain summer flower stalks that are over for the winter.
Junkyard is correct, wee on it ( maybe at night when the neighbours can’t see).