BarnaloppanLocated at Skeifan 11A, Barnaloppan rents out booths to those who want to sell their used children’s clothes. C to CNever make the mistake of overlooking Facebook Marketplace or the homegrown bland.is to buy or sell children’s clothing or other items you might need for school. Góði HirðirinnAt Köllunarklettsvegur 1, Iceland’s largest secondhand store has kids’ clothes, but also other things, such as ice skates, skis, sleighs, toys, puzzles and children’s books. As We GrowLocated downtown at Hafnarstræti 19, As We Grow has pricey but long-lasting slow fashion clothes for your kids. To ease the retrieval of these items, it is very important to label them with a name and phone number.