Tootfinder

A local cancer institute has a giant inflatable colon, maybe 3m in diameter and 6m long, set up at a community event.
Where does one even go to make such a thing? I feel like there's a single digit number of companies globally that specialize in making custom printed/sculpted inflatable props like this. It's certainly not something you'd buy COTS.
Like anybody who makes bouncy castles *could* but I suspect most such companies just do standard designs