Don't forget the various cleanup categories -- tags like {{wikify}} and {{notability}} don't lead to immediate deletion, but will eventually draw the attention of experienced editors who may decide to nominate a given article for deletion.
When I nom things for deletion, it's usually in the course of my "normal duties" -- I'll find them cleaning up after vandals, while trying to sort categories, or clean up articles in general. Things like that.
And there is always [[Special:Random]], but I try to stay away from using that too often.
-Luna