Chastity and orgasm denial discussion

Hi all. I’m on the lookout for a long-term wear chastity device that will suit a very small cock when flaccid. Also, does anyone have tips on how to measure yourself accurately without spending extra? I’m finding it tricky to do it myself. My goal is something durable yet budget-friendly and suitable for continuous use. Any guidance or assistance would be greatly appreciated. Thanks. SweetKevin