SlackBuddy

Here is a fun project to help you keep track of your different slack channels. Shared by TaylorC85 on Instructables:

Ever have trouble keeping up with your different slack channels or miss notifications when one of your groups becomes active? Slack Buddy is an ambient display which can be kept on your desk to gently notify you when your slack groups are active. Up to 4 slack groups can be added to the Slack Buddy cube, and each group will be displayed on one side of the Slack Buddy. Slack Buddy will gradually increase in brightness as you receive more notifications. This is a great way to see which of your teams may be in need of attention.

Learn more and checkout the full guide!