I am working on a lapghan but I have swatches from 2 different yarns and want to “patch” them together (kind of like a quilt) has anyone else tried this? had good results?

Assuming you’re knitting the squares seperately and then sewing them together, you may need to change needle size and/or the number of stitches and rows if your yarns don’t knit up to the same guage. I’ve seen things like this done and I’d image it would work great!