These days familial units come in all shapes and sizes (five grandparents, a step-parent, and a sister by marriage). And though we believe the more, the merrier — we couldn’t find a family tree where the whole brood could perch.

Thankfully, JHill Design’s customizable family tree print lets you add extra slots to accurately depict your complicated clan. The artists there have yet to encounter a combo they couldn’t make work (you hear that, Brady Bunch?) but do ask that you limit your unique lineage to four generations (for space’s sake).

The beautifully designed keepsake is printed on archival paper with two color options: orange, green, and blue or orange, pink, and yellow. Got good penmanship? Fill in the blanks on your own. If not, order a personalized version with the information already printed. And let someone else worry about keeping the names straight.

Available online jhilldesign.com, $50-$85.

SCAMPER
Trick-or-Treat with the Boutiques
What: Suit up in a costume and rack up candy while going door to door.
Why: Get a head start on collecting sweets.
When: Sat., 11 a.m.-6 p.m.
Where: Old Town Boutique District, King St., b/t S. Union & S. Saint Asaph Sts., Alexandria. Participation is free.

BOOGIE
Justin Roberts
What: The well-known musician croons ditties alongside the Not Ready for Naptime Players.
Why: The hilarious “Meltdown” song hits close to home.
When: Sat., noon & 3 p.m.
Where: National Geographic Live, 1600 M St. NW, at 16th St. NW (202-857-7700). Tickets online at events.nationalgeographic.com. Adults, $16; under 13, $12.

PLAY
Kid-Tastic Celebration at the Marine Corps Marathon
What: Watch runners trot by, hear street music, and score balloon animals.
Why: Free cotton candy to guarantee sugar highs all weekend.
When: Sun., 9:30 a.m.-2 p.m.
Where: 18th St., at Crystal Dr., Arlington. Admission is free.

Photo: Courtesy of JHill Design