Step 1: Materials
Markers and decorating things
Step 2: Envelopes
"open when..." Make it colorful and the decorate the envelope but in the middle write words like "your sad" "your mad" so that you can open the envelops when your feeling upset. You can do repeats.
Step 3: Paper Inside of Envelopes
happy you could say something about being happy right at that moment then look up happy quotes or whatever word do this for everyone
And then put it in each envelope