Hillman 3/16 in. Strap Toggle with #10 x 2-1/2 in. Machine Screw (12-Pack) 376362 - The Home Depot
Strap Toggle w/out Screw - Miller Industrial
Chain quick link | S&K Theatrical Draperies
Amazon.com: TOGGLER SNAPTOGGLE Drywall Anchor with included bolts for 1/4-20 Fastener size; Holds up to 265 pounds Each in 1/2-in Drywall by TOGGLER (4 Pack) : Industrial & Scientific