Front Load Washer Door Prop

“Received this suggestion from a friend's newsletter today. This doinky tool can be used to prop your washing machine open between washes to prevent mold build up on the inner tube. If you're like me, you might purchase this because it's "only $9", but if you're also like me, you may be lazy and prefer to just drape a hand towel. Either way, we're all solution-oriented people so I hope you tell me what you land on and if you have alternatives.”