I’ve found myself constantly playing around the house with this chopped down (25”) iron I threw a grip on - lets me swing freely indoors without fear of smoking the ceiling.
I have a couple reflective areas where I can check swing positions too.
Many friends have asked me to make them one so figured I’d see if others are interested too! (Sadly, about as good as it gets for me during crappy Michigan winter weather)
link to listing ($29.99): https://www.ebay.com/itm/The-Shortest-Iron-indoor-golf-club-training-aid-/264917650390