When the court deems it helpful in a particular case, jurors may be provided with notebooks to use in collecting and organizing appropriate materials, including such items as jury instructions, written exhibits, and the juror’s own notes. Counsel should be apprized of this procedure and invited to prepare exhibits and other materials in a way that facilitates their inclusion in the jurors’ notebooks. At the end of the trial, the notebooks should be collected by court personnel and their contents destroyed, unless the court instructs to the contrary.