Not sure if this one has been done before, and it may be a bit more interactive. I think it would be fun to do a scavenger/treasure hunt themed one. This may work best on either a weekly basis or monthly. If you choose weekly, then have a different "item" for each day of the week. Same idea would apply for monthly, except just do one week a month.

Example...

Monday - I can be used to help keep your little one healthy, or maybe keep you updated on the latest text message. I love to fit into tight spaces, or stand out in the open. I add color and zaniness to your day. What am I?

Answer - A ZZ Be mine

(I know that probably wasn't he best riddle.... )

At the end of the week have everyone post their answers. Out of the correct answers, randomly select a winner.

You could also get wayyy more creative with it and use pictures of JJB's in the wild. This could be especially fun in December.

That would be fun! Pink ladies are good at scavenger hunts!