Note for myself

Under consideration:

1. (Fieldless) an oak (or holly?) leaf (inverted?) Or.
2. (Fieldless) a wreath of oak (or holly?) Or.
3. (Fieldless) a skillet sable(?).
4. (Fieldless) a labyrinth Or.
5. (Fieldless) a Suffolk knot (inverted?) (tincture?).

ETA: Istvan suggests
6. (Fieldless) a swan in her piety argent.