Maybe not what you are looking for but you could simply drill a second hole with a hole saw ,or similar, near the opening and add one of these. 2 PACK Plastic Bottling Bucket Spigot tap faucet for Homebrew Wine Making Beer https://www.amazon.com/dp/B0746GXTV1/ref=cm_sw_r_cp_api_glt_fabc_6MRFWREJRBT4P6D5GAFA