That’s a banana hanger. Banana Hanger, Banana Holder, Banana Stand, Grape Hanger https://www.amazon.com/dp/B013HATW1W/ref=cm_sw_r_cp_api_cfv3AbAEJQ5XJ

google keyword planner / trends / correlate

and the best seller rankings on amazon (note the sub categories too) , example "banana holder"

first hit on amazon

scroll down

Best Sellers Rank #56,057 in Home and Kitchen (See Top 100 in Home and Kitchen) this is really terrible , we want to kind of ignore top 100 because thats what everyone focuses on but below 500 is bad

140 in Home & Kitchen > Storage & Organization > Clothing & Closet Storage > Clothes Hangers > Standard Hangers **so if someone is actually just going to amazon and typing hangers under home and kitchen we have a chance...long shot""

but to keep with the example : [google trends}(https://www.google.com/trends/explore?date=all&q=banana%20holder) - apparently april 2015 was the month of the banana holder (maybe it was on a cooking show?)

etc

is it popular? will it sell? what do people search for to find this product? too much compeition? etc