If you cannot find a 3D print file.
You could try using a cellphone mount?
https://www.amazon.ca/dp/B08FMQTTM9/ref=sspa_dk_detail_0?psc=1&pd_rd_i=B08FMQTTM9&pd_rd_w=sUjq6&content-id=amzn1.sym.d8c43617-c625-45bd-a63f-ad8715c2c055&pf_rd_p=d8c43617-c625-45bd-a63f-ad8715c2c055&pf_rd_r=01SNV8GZ8Y4SATS34SYW&pd_rd_wg=5vUQg&pd_rd_r=077af693-721f-41c1-8ce8-3dec222d3d01&s=wireless&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw
or this (I think they come in different diameters)
https://www.amazon.ca/Nilight-Horizontal-Mounting-Trucks-Warranty/dp/B07TPMTJMN/ref=sr_1_6?crid=1LWNKNY14CFYP&dib=eyJ2IjoiMSJ9.ohomLeDGPBi29NmQ3dTyR-LE-MNjCdzUMbk2AnsA1V71iKGdqufGEzjExesbyX4-3DYX975lPdqwPLAvI0II0wDQXvL9m9K5PV-oPkt8mjXz7re8tYZt9oQVKE2Hox28ZCqZx4uuYHPTYOn2CcnOlKQizjSZc1YcAxkknJXRHQSb6YFRxiWbElqqr_XiFybMiWmvJjQV6zXwyhWt8wWwdhOvfYiXtZEMxRX5r3jRUnZs6Dvhq_4BACKshsBgdT6pABI33kwfleNk-eEv6aXNkUgpYaacIb_RfWH6H8_toAk.CUnn1LdCNQKMwlwteC_yLZlnzPvsUAvrEnZFYrgh58M&dib_tag=se&keywords=atv+light+mount&qid=1713347651&sprefix=atv+light+mount%2Caps%2C137&sr=8-6
You could try using a cellphone mount?
https://www.amazon.ca/dp/B08FMQTTM9/ref=sspa_dk_detail_0?psc=1&pd_rd_i=B08FMQTTM9&pd_rd_w=sUjq6&content-id=amzn1.sym.d8c43617-c625-45bd-a63f-ad8715c2c055&pf_rd_p=d8c43617-c625-45bd-a63f-ad8715c2c055&pf_rd_r=01SNV8GZ8Y4SATS34SYW&pd_rd_wg=5vUQg&pd_rd_r=077af693-721f-41c1-8ce8-3dec222d3d01&s=wireless&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw
or this (I think they come in different diameters)
https://www.amazon.ca/Nilight-Horizontal-Mounting-Trucks-Warranty/dp/B07TPMTJMN/ref=sr_1_6?crid=1LWNKNY14CFYP&dib=eyJ2IjoiMSJ9.ohomLeDGPBi29NmQ3dTyR-LE-MNjCdzUMbk2AnsA1V71iKGdqufGEzjExesbyX4-3DYX975lPdqwPLAvI0II0wDQXvL9m9K5PV-oPkt8mjXz7re8tYZt9oQVKE2Hox28ZCqZx4uuYHPTYOn2CcnOlKQizjSZc1YcAxkknJXRHQSb6YFRxiWbElqqr_XiFybMiWmvJjQV6zXwyhWt8wWwdhOvfYiXtZEMxRX5r3jRUnZs6Dvhq_4BACKshsBgdT6pABI33kwfleNk-eEv6aXNkUgpYaacIb_RfWH6H8_toAk.CUnn1LdCNQKMwlwteC_yLZlnzPvsUAvrEnZFYrgh58M&dib_tag=se&keywords=atv+light+mount&qid=1713347651&sprefix=atv+light+mount%2Caps%2C137&sr=8-6