买夹子啦. Ace hardware 有. 我家一个summer 10-15 个. ：）

https://www.ebay.com/i/324204023662?chn=ps&norover=1&mkevt=1&mkrid=711-117182-37290-0&mkcid=2&itemid=324204023662&targetid=919191496497&device=m&mktype=pla&googleloc=9015262&poi=&campaignid=9344508178&mkgroupid=100238954131&rlsatarget=pla-919191496497&abcId=1139336&merchantid=118880962&gclid=EAIaIQobChMIuYGh5LmY6gIVTNbACh06vw0JEAQYCSABEgJhc_D_BwE

I cannot find the link under Ace.  But very similar to the eBay one.