Time to knock this off the top!

I have about theee sorts of Autumn Olive plants. One is my favorite and has a really silver dust on the berries. It is the last to drop its leaves too. Don't know the particular variety but it does very well here.
Will have a few Goumis by next fall, I grew them from seeds. The cuttings should root pretty easliy. berry size is like a Red Currant or slightly larger.

Where in zone 7 are you? I have a goumi (think I got it from Raintree; is self-pollinating, irrespective of what they may say). Do cuttings take root easily? Might be nice to have another one in the backyard, although space is becoming limited.

Elderberries are easy, though depending on the type you may need 2 different ones to get fruit.

Crabapples also easy. Cherries (unless bush cherry?) may be more of a problem, as a stone fruit requiring spraying.

Easiest currant might be clove - plus the yellow fragrant flowers in the Spring.