You could make:
- a chevron quilt with 3 different fabrics, either with
HSTs, or
strips.
- a quilt with
rectangular 4 patches
- an
irish chain quilt, either double or single with two differently coloured chains.
- a
disappearing 9 patch quilt
- a
disappearing 4 patch quilt, either with two different coloured blocks or interchanging the colours between two blocks (uhm...do you know what I mean by that?)
Hmm...I'm sure there are many more!