This may be a no-brainer to many, but I devised a way to use some of my collection of vintage shanked buttons as tag decorations. I didn't want to use adhesive or hot glue.
Next, a little further embellishment.
Same as first two pics above, then thread both ends through the needle.
At this point, pull both thread ends through the loop as before.
The little paper flowers could have been punched in their centers with a hole punch, but "sewing" them was actually easier.