GrowNYC has organized for clothing and textiles to be collected by Wearable Collections at an array of locations on Saturdays and Sundays.
The Brooklyn collection locations and times on Saturdays are as follows:
Ft. Greene Greenmarket (Myrtle Ave and Washington Park) from 9am-1pm,
Grand Army Plaza Greenmarket (under the GAP Arch) from 9am-12:30pm,
McCarren Park Greenmarket (Union Ave and Driggs) from 8am-1:30pm.
For more details, see https://www.grownyc.org/clothing