Never where I have worked but I have been jealous of friends when they have told me that people can present their pet projects or something they are working on in their free time.
A bit like a show and tell. Designer A may collect vintage whatevers. Designer B may be learning how to knit and this is where they are in their progress etc. Or Designer C may wittle spoons on their weekends.
Basically getting people to share something creative they do outside of work.