Here are a few... Using blue and yellow fabrics would be very pretty with these blocks... There are so many blue florals with touches of yellow in them... Yellow florals... wow...so many choices :D:D:D
http://www.quilterscache.com/S/SignatureBlock.html
http://www.quilterscache.com/S/SignatureChainBlock.html
http://www.quilterscache.com/S/SignatureCrossBlock.html