It's kind of odd to me to hear someone say "They want to believe." It begs the question what they want to believe in and why they want to believe in it. Belief isn't a choice, in my opinion. If you want spirituality that is another thing altogether, again, in my opinion. Spirituality, to me, put simply, is the search for things that are unseen and yet produce visible effects. For example, in a practical sense, breath, wind, environmental, social and cultural influences, also art, music, entertainment. Movies, television. In a more traditional spiritual spiritual sense, religion.
You mentioned that Christianity was undesirable. It is to myself as well. But the Bible and both traditional Judaism / Christianity are strikingly different. They have both adopted pagan, or outside meaning which transmogrifies them.
The big difference within religious schools of thought are pretty much centered around creation claims.
(The brief information given below is taken from my website, linked to in my sig)
"Though there are a few claims of divine inspiration and references to creation in some religious texts, they are all vague and insubstantial with the exception of the Bible.
Buddha rejected the concept of a God and his possible interference with man. Confucius referred to a vague heavenly way, or nature, which also didn't interfere with man but is comparable to human nature. Lao Tzu, who formed Taoism, made a similar claim. The sacred texts of Shintoism make no divine claim, though they do include creation myths, they aren't historical and the text can't be, in fact weren't meant to be corroborated with actual evidence.
Some of the Vedas of Hinduism make vague unsubstantiated claims of celestial inspiration. Their creator god, Brahma was born of another deity, and Brahman is a metaphysical force rather than a divine being. Most Hindus don't believe in a creator, though that is left to the individual. Scientology also leaves the belief in a creator god up to the individual, and teach that the Theta willed themselves into existence generating the MEST, Matter, Energy, Space and Time into being. There is no way to corroborate these claims.
Mormons believe that the Bible is incomplete, That the heavens and earth were created by Jesus Christ under the direction of God the Father. The writings of Joseph Smith often contradict the Bible, though, and there is no evidence of his alleged historical references. Muslims believe the Genesis account to have been corrupted, Their position on creation and evolution vary over time and individual interpretation. References to a creation in the Quran are vague and unsubstantiated.
Christians believe in the Biblical creation account, though their interpretation of it varies. Some believe in an old earth and some believe in a young earth. The Christian Greek scriptures themselves are in complete harmony with the Hebrew Aramaic texts, which themselves foretold of an acceptance of the peoples of the nations once the Jewish people had rejected Jehovah God and his covenant with them. Both texts have a great deal of corroborating evidence in their support.
Ancient mythology consists of myths which were not meant to be taken as literal or historical texts.
They have a great deal less manuscripts than the Bible to compare and very little if any corroborating evidence to support them.
Science can only speculate on the possible forming of the universe and planet earth. The current hypothesis is that the matter that formed the universe randomly and spontaneously appeared of it's own accord. The Bible, is, by far, the most likely authority on the subject."