You don't say what kind and size your machine is. I purchased a Coleman cooler on wheels for my Featherweight. It is soft-sided with an inner hard plastic shell. I bought one a size larger than the machne so that I could fit in my fabrics, light, fan, etc. It has a top zipper pocket that is about 2" high so that I can fit several square and rectangular rulers up to and including my 12-1/2" square, plus scissors, markers, etc. Plus it has several outside pockets for snacks, drinks, etc. It's great for classes and workshops.
On the last day of last year's Houston Quilt Festival, I got a medium Tutto case for half price. I would never have bought one for full price, but couldn't pass it up. A few years ago, my sister bought 7 king size batts of W&N 80/20 for $100 plus tax. Because she had no way to get them home, she told me to use what I wanted and left them all with me. If you go to a national or international quilt show with lots of vendors, plan your travel to stay the last day. Vendors would rather discount their merchandise than pack it up.