Frog Midi Hama Pegboard. Frog Hama Beads pegboard for Midi Hama Beads, now supplied in GREEN! Midi Beads are 5mm in size and not suitable for children under age 5. The shapes are reusable and are of a size which can be easily completed. Why not team up the frog and the princess and see what happens if they kiss! Pictures show design created on a pegboard with Hama Beads. Beads are not included with this purchase which is for pegboard only.