What have I used;
Gloves for grooming horses , white with spots
Gardening gloves
Bathroom gloves for washing, cheap and usually pink
Grip rolls cut into pieces to stop things moving in cars.
Carpet thin gripper roll.
Rubber tips.
Sponges from kitchen
Hoop
Nothing

What do I use usually the flat grip mats as my hands get very hot and gloves are no good.

a few drops of glycerin gives my hands enough stickiness to quilt!

I also use Machingers. I have a pair of the Fons & Porter gloves, but threads stick to them...not to the Machingers. I can trim threads without taking the gloves off.

Machingers for sure after trying all the above........Good investment......

I also use garden gloves with little rubber nubs for FMQ.

I've tried the rubber fingers that I used to use as an accountant, they work pretty good, but its a pain taking them off and back on. I also tried the garden gloves, the halo, rubber and rubber shelf liner, but my machingers are my absolute favorite hands down!

I LOVE my graberoos. Just ordered a second pair as a back up for when I lay them down and can't find them for a week or so.