sampler blocks made with many different fabrics/colors can be used together- just choose a fabric that will pull them all together- like black or white- if you sashed each one (or window framed) them all with the same background fabric you could put them all together in the same quilt....or sort them so you have ones that are (kind of ) alike---same color feel- or style and make a couple different quilts- and you do not have to be limited to black or white- a blue- a yellow- anything=as long as it is the same for all of them it will pull them together