These are all great suggestions for cats who are phobic about having their claws trimmed. My MIL's cat is like that, too, and I could not trim his claws.
IMHO, the best approach is to desensitize the cat to having their feet touched. When you are cuddling with the cat and they are calm, just touch one paw, then go back to petting where they like it best. Do this casually and touch all 4 paws in a 5 minute cuddle-fest. If you want to progress quickly, do this a couple times a day. You have to do it at least daily to make progress. Work up to holding each paw, then holding the paw and squeezing gently to extend the claw. I enjoy playing footsies/pawsies with my cat where I press my toe (or finger) into the middle pad and let the cat extend their claws around your toe/finger. This is a good exercise for their paws, too.
When I trim claws, I first make sure that I am calm and steady. I get the steptic powder handy and the post-trim treats (hairball remedy & Greenies). I sit with the cat in my lap, also sitting. Cuddle a bit first, then I start with the back paws. Better to clip long and often than quick 'em and get blood all over. If you are still getting your cat desensitized to paw contact, just do one paw. In fact, it's better to do just one claw calmly, then reward the cat with release and treats than get into a struggle.
I explained this all to my MIL. She likes having a cat because her cat is very independent. They are like a couple of senior citizens cohabitating without communicating very much except at meals. My MIL said she would rather pay to have the vet trim Keoni's claws than do the work of desensitizing.
I didn't think playing with my kitties claws was *work.*