Kilts can do this.

I have had the fabric for a kilt just vanish, and then reappear.

This is not exactly amazing if you could see the amount of stuff strewn around the house - but when you were just working on the mathematics on the back of an envelope, then look round and find you can't see the fabric it does seem a bit weird.

That is the thing about an untidy house - you find things exactly where you left them - except for the things which unacountably vanish, and then sometimes reappear either in the place you left them, or in another part of the house where they had no business to be at all.

Of course some things vanish never to reappear, but then there are the things you never saw before which are just suddenly there.

I think it might have something to do with distortions in space and time when there are high concentrations of anything in a small area.

Some strange things must happen around Hamish's Kilt Kollection.