The following inline template may be useful: ^{[April Fools!]}

• Put {{copy edit}} on WP:GOCE and Wikipedia:Typo Team (last year the former was kept by tacit consesnsus for the duration of the day, and the latter edit remained there until I reverted it at 9:39 UTC on the 2nd)
• Stick User:1otheraaa/Template:Uw-warnperday1 on the talk page of someone who won't be annoyed
• Label myself with a banner as a sock of Jimbo
• Drop Template:User kilroy was here on as many pages as possible
• Add to Jimbo’s user page