A Suggestion

Lightosphere

Hi, Today I saw someone said that he/she want to make a vending machine and then she/he said that he/she want to sell a PJS in a vending then it made me think about this idea, so when if there's item above foundation block and someone bump a rent bumper that connected with it there would be a warning says "Warning There is [X] item above this rent space, do you want to continue?" Or something like that
Well that's all I hope it's possible to make this