Dissendium 2.0

FORMAT: Log.
WHO: Sirius Black, Walburga Black, Pollux Black, with brief guest appearances by Orion, Regulus, and Kreacher.
WHEN: December 29, 1975, in the hours after Jove and Sirius wreak havoc on Cissy's party.
WHERE: 12 Grimmauld Place.
WHAT: Sirius spends some quality time with his family.

( Still, he refuses to regret this, as his brother is sent to bed. )

FORMAT: Log.
WHO: Lexy Lane and Sirius Black, with guest appearances by Marcus Lane, Isaac Lane and Orion Black.
WHEN: December 1975, prior to Narcissa's holiday party and the Steal These Records party.
WHERE: Steal These Records, Camden Town, London.
WHAT: Sirius makes an escape.

( If it were up to Marcus they would have kept purists in cages and made them dance for Muggle money. )