I was looking at those suction cup bags they sell for boats, & personally I thought $10-$25 was a bit high for a bag with 3 suction cups on it. I found a box of "Snap-Hooks" at Target - one of those "as seen on TV" things. Suction cup that goes against the wall & a hinged hook that when you pull down into place provides extra suction. I then bought (at the "All The Crap You Could Possibly Want For a Dollar Store") lingerie bags & attached two loops (I used some strong ribbon I had)at the top 2 corners. I use them for dirty clothes, attached one inside the cabinet door in the head & one in the cockpit that I put plastic sags in for trash. Then I have some of the hooks just stuck on the wall for hanging up towels, etc. I have also bought some of those shelves, baskets, & toothbrush holders they sell for putting up in the shower. Skip the super cheap ones & get the $5 - $10 variety, they actually do stay. Below is the link for the snap-hooks, but I paid half this price locally.