Honoring grandma-to-be at shower?

jenn6180

My shower is being hosted by my MIL and SIL.  I would like to do something to honor both grandmas-to-be at the shower because they are so proud and excited!  I've thought of making them diaper cakes with wash clothes and such incorporated, things they'll need when babysitting.  Or having them wear sashes that say grandma-to-be.  My husband thought of bringing them corsages to wear at the shower.  Any ideas on how to honor them at the shower?  Also wondering if this will make my SIL feel left out since she co-hosted the shower with MIL?  I plan on sending flowers to both hosts at work a couple days after the shower as host gifts.