Hi Dany welcome to the Quilt Board!
I use different cushions depending on what I'm doing and where at, but the ones I use the most are the magnetic dish and or the wrist style. Both came from Harbor Freight and were a lot less expensive than in a sewing/quilt shop. The down sides of these...when I pick up the dish once in awhile I get an odor that reminds me of a garage and the wrist magnet doesn't have any padding on the wrist, but I solved that by gluing a bit of felt underneath. Just in case, here's a link.
https://www.harborfreight.com/magnet...and-61644.html