they have so many dies you can make just about anything..
I use the 2x2 for leaders and enders quilts
i use the 2.5x2.5 for patterns that call for them
i use the 3.5x6.5 for scrappy cobblestone quilt
I use the rag dies for quick and easy baby quilts- applique any of the baby shapes in alternate sqs
I use the Big Tumbler quilt for quick and easy scrappy last min quilts
I use the bigger sqs to cut up scraps for later projects
I use baby tumbler on flannel scraps for later baby quilts
I use the 9in Hex for Floating hex pattern
I use the smaller hex die for GFG
DWR, Blazing Star, Peter & Paul and the like are just great to have as I cannot imagine cutting all those pieces
Just remember to buy extra mats- keep plenty of each on had as they are disposable.. When on sale stock up....