Keep yours eyes peeled (pardon the pun) on Etsy, Pepper.Ugh, no thanks. Those sticky things on the bottom rot. I like the appliques because they were permanent.
Ducks! I remember them from years ago, I hadn't thought of them in years...I have them, and also ducks! Years ago I wanted assurance that my mother would be safe in the shower as she lived alone. I can't find new ones; these are deteriorating, but there is still enough left not to slip.
Rubber mats can't be left in the tub, or they get moldy and very slippery. I pull up mine after every 2nd shower & leave it upside down so the suction cups and the tub floor dry. And every few weeks, I use a "Turbo Scrub" with cleaner on the underside.I remember those appliqués, as well as bath mats. They were hard to keep clean, and tended to deteriorate after a time. The suction cups on the mats became slimy, and then tended to mold, posing a cleaning nightmare or necessitating replacement...