Appropriate Lei for Keiki?

Aloha,

Haole girl here looking for advice. What would appropriate lei be for 6 5-year-olds? My daughter's preschool class is going to be graduating up to kindergarten and they're planning on having a lei ceremony for the keiki.

I was originally going to do money lei but they're so little that I don't know if that's lame or exciting? Should I just do candy lei? Am I overthinking this?

I just really care about these kids and I want to make the ceremony so special for them. Thanks for your thoughts.