The suggestions you've gotten so far are pretty good. Myself I prefer to go with >>60042910
, making the PCs know eachother BEFORE the actual game begins.
In my current campaign's session zero, I had people come up with at least two connections to other PCs for their characters, helping them flesh out the ideas further.>Orc and bugbear are flatmates, commonly go out for a drink and brawl together; undisputed tavern brawl kings of town>Orc was found passed out in the woods by kenku, who thought he was dead (fascinated by death) and got aquainted when orc woke up>Kenku wandered into an abandoned treehouse (hunting post) and nested on a high support beam - it is owned by shifter, who climbed up there after being chased down by the owlbear; while the kenku was chatting there with the orc>Shifter needed to renew his hunting licenses, and the silver tongued wood-elf offered to help him out for a fee>Wood-elf helped a dwarf to pass as a human for a guild membership in exchange for local gossip>Dwarf (in human guise) is a frequent gossip pal with the kenku who works at the graveyard, because the kenku really really likes his decorated outfit>Bugbear was looking for more people to come and hunt down the owlbear for some coin, and the wood-elf agreed to lend his bow to the cause
In a nutshell, everyone was involved in hunting down an owlbear that had gotten too close the town for their comfort. Some trapped in the tree by it, some hunting it, and some spreading gossip about it.
What really united them, was when they started looking into some nobleman coming into town, looking for a lady, and the connections started pulling them together for gossip, and eventually help dealing with the nobleman.