One of my overwintering plants is a dragonfruit cactus.  Apparently the soil got some fungal spores in it at some point, as its growing a few yellow cap mushrooms that I've been picking out every time I see one.  Was just wondering, they are interesting looking mushrooms, would they be dangerous to use as some living bonsai decoration?

Nevermind, looked up what they are, they wouldn't work for bonsai decoration, they get too large.

Inedible but harmless, I'll just keep weeding them out.

But the idea using mushrooms as a decorative item is absolutely fantastic, almost revolutionary. Of course finding the correct types of fungi could be a bit of a handful.