I use Elmers for basting, appliques, and other things. It totally washes out, and I have never had a problem with it.
Some like to use the washable glue sticks, like what scapbookers use too.
As long as these are all water soluble, you can test them on scraps for staining, and to make sure they dry so that they don't gum up your machine's needle :D:D:D