I'd just add some side borders and presto you have place mates.

Turn one block over and measure the sizes of the squares. You will need 5 sq's and 4 hst's In 5 different colors. Sew them together using the blocks as a guide. Am I right in thinking the each sq is 3 1/2in.?

I would take four blocks and make a new center using them. An X appears. Then I would look for a coordinating fabric and make a boarder around it using the 4 remaining squares - one in each corner.

Put a fussy cut in the middle add some borders and donate it if you still don't like it.

just out of curiousity, what was the embroidered center that didn't turn out well?

Looks like 2 long and one short table runners to me!

A hummingbird and some morning glory flowers....I stitched it way too loose and was just not at all happy with how it turned out....it was first time I did anything hand wise...next time I'll use tear away stuff in a 14count and cross stitch it....

Maybe some potholders?

It's a 9 patch variation One of my books call it Simplex Star

I like the idea of doing another center block and adding sashing. Or you could alternate with plain or complementary blocks. Add borders and you've got a quilt. Another option is to put them away for a while and maybe next time you see them the answer will come to you. That's what happened with some leftover rail fence blocks I have. Came across them a while back and immediately knew exactly what to do with them. Presto! A quickly finished project.

BTW, nice job on the piecing. I really like the block design and the colors you've used. It would be a shame not to put them to good use.