I've been a bridesmaid in an Anglican church.  Attended weddings, funerals, baptisms at various Christian churches. 

Also have attended Christian services with relatives, as well as on my own when I have felt the need to connect with people.

I regularly go to a shared meal at the local Church of Christ, which is open to all.

The spiritual connection I feel with the other people attending transcends the personal beliefs of each of them.

Native American sweat lodge... should have seen the look on my face realizing the lodge is not "a long house". this is soooo cool, I just discovered them online and can rsvp for a sweat this weekend!

Hindu fire ceremony

son's Catholic baptism

nieces' LDS baptisms

brother-in-law's evangelical baptism

various friends and family confirmations and weddings

mediation, asana, pranayama, philosophy retreat by Amma

spirituality has no differences across any of the various (man-made) religions which were built ON TOP of (progressive) revelation.