>>4176696I've tried the saran wrap. It works really, but it's too fragile for a solid recommendation. I mean, if you're just going out shooting for the fun of it, sure, why not. It's cheap and easy enough to replace the wrap. But I wouldn't bring it on a professional gig. Heat, moisture and any bumps and accidental touches can ruin it. I definitely wouldn't recommend it, unless you already have some step-up rings lying around. Then you'd be better off with a Chinese mist filter, which can be found for like $10-15 on Wish, Aliexpress, etc.
If you want a good filter for cheap-ish, Prism's dream filters are great. I prefer them over Promist. It think they're like $70 or something.