Why not keep your Laws knowledge up to date? Create a learning account and track your progress: https://laws.lords.org/login/index.php
CPD modules are available here:
Conflict Management: https://wcaco.org.uk/umpires/education/self-taught-cpd-conflict-management/
Run Outs: https://wcaco.org.uk/umpires/education/self-taught-cpd-run-outs/