Ideas for a shower mimic

Hi all, I’m not usually one to post but I need help with ideas. My stepdad is bedridden due to a brain cancer. It’s been a reoccurring conversation with him why he can’t get up to go shower anymore (he needs a hoist and getting him actually into the shower isn’t an option). He craves showering, the feeling of rinsing the day off and the water trickling over him. Does anyone have any ideas on how I can do a DIY “fake” shower for him to make him feel somewhat normal again. Thanks 💗