A close knit cricket team can't be faked.
You can have as many team nights out, boot camps or bonding sessions as you like. If there is no basic trust and understanding of responsibilities then the team will not gel, at least not in my experience.
Expertise from captains, coaches and senior players is required if a team does not come together naturally. Most players are cynical to traditional 'team building' techniques, even if they really want it to work.