K.K.
Congratulations! I had a shower in May and I gave the hostesses wrought iron crosses that go in a flower pot that I found at Weir's Country Store in Plano. They were around $3 each. (You may want to call first, b/c that was in May...but I have seen them at other times during the year I added ribbon and didn't even have to gift wrap.
I also considered personalized stationary from Paper Lion in McKinney. ($10-12)
One other quick idea is adding a pretty pen to a journal. (Bombay Outlet in Allen had decorative pens...I think 3-4 pens for $7 if I remember correctly)
Hope this helps and have fun at your shower!