This thread had me wondering..... of something like this would be worthwhile if you had the room. It looks to be 14" H x 15" L x 9/5" W... not sure if it would fit under the bed... but maybe. One of the reviews said to not let the picture fool you as it is very compact.
https://www.amazon.com/dp/B07QQLK2JT...NsaWNrPXRydWU=