i use two unconventional proofs for god. one is healing miracles, i dont see the kinds of miracles that happen to theists happen to atheists, or even non christians honestly, despite looking for that evidence and asking around. i realize that just because we dont see it, doesn't mean it's not there, but this is still significant.
the other one is that the large majority of atheists come back believing in God after NDEs. it's irrational to say there's no evidence for the afterlife, when you get into the science of NDEs, and the credibility of NDEs lend credbility to all the atheists that convert. it's also been objectively studied that christian NDEs happen at a much greater rate than non christian themed NDEs... such that jesus is a common component of these experiences. nonchristian themes are very rare, and hard to quantify or qualify, and open to interpretation, and might be unreliable.
there's all the philosophical arguments for God, such as the design argument and the causality argument. these are best kept at the level of philosophy but dont get much beyond just corroborating the God theory.
in fact, all these points could be said to be just consistent with God, and if you wanted to split hairs, not evidence. a skeptic on this site made that point once, is this more about evidence or just 'consistent with the God theory but not evidence'. but with the miracle and NDE point, it's majorly lacking in common sense to stay atheist.
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some other points. there are credible medical doctors who are exorcists who say they have seen supernatural phenomenon. there are credible doctors who study young children who remember past lives, and say that the children couldn't know the details they explain. i think there are professors out of the university of virginia for example who study this.