No junk in these trunks.

SHOP
Boldfacers Stylemakers Pop-Up
What: Boost your wardrobe with stunning pieces from the closets of more than a dozen local style idols.
Why: Everything from $2 bracelets to $250 designer goods (Gucci, Jimmy Choo).
When: Tonight, 6-11 p.m.
Where: W Boston, 100 Stuart St., Theater District (617-261-8700). Tickets ($10-$25) at the door.

GORGE
Harvard Square Chocolate Festival
What: Nosh your way through three days of cocoa-infused treasure hunts, tours, and ample freebies.
Why: Dining in the Dark menus at Sandrine’s and UpStairs on the Square (we’re talking beef brochettes with dark chocolate berry sauce).
When: Fri.-Sun.
Where: Locations and info online at harvardsquare.com.

EXPERIENCE
Mass Ave Opens
What: The new library-walled hangout from the Back Bay Social Club encourages neighborly get-togethers with cocktails like the Snack Bar (dirty vodka on the rocks with Sicilian olives and manchego cheese) and large plates designed to share.
Why: Cheese fondue with tenderloin skewers and four types of sliders.
When: Daily, 5 p.m.-1 a.m.
Where: 94 Massachusetts Ave., Back Bay (617-927-4900).

BARTER
Clean Out the Bookshelf: a Cookbook Swap
What: Trade in the duplicate Bittmans for new-to-you recipe compendiums, cuisine-themed literature, food mags, and kitchen utensils.
Why: You still don’t know how to cook everything.
When: Sun., 1-4 p.m.
Where: Green City Growers, 600 Windsor Pl., Somerville (617-776 1400). Suggested donation is $5.

Photo: Alicia Savage / Courtesy of Boldfacers