I've posted before about using motifs for purposes other than those intended by the pattern in which one finds them. A great example is the crocheted snowflake. Usually, snowflakes are portrayed as stand-alone ornaments: tree decorations, bookmarks, earrings (when done on a small scale), appliques, and so on.
However, most snowflake patterns mimic nature in that they are hexagonal. Hexagons tile nicely. That means you can join them along the sides and not have any weird gaps or holes where another hexagon will not fit. So snowflakes are a good option for making curtains (your own personal flurry in the summer), doilies, tablecloths, lace garments, or any other lace fabric.
I think the best part is that snowflake patterns are often much more interesting looking than other motif patterns.