Quixotic[0] (my content obfuscator) includes a tarpit component, but for something like this, I think the main quixotic tool would be better - you run it against your content once, and it generates a pre-obfuscated version of it. It takes a lot less of your resources to serve than dynamically generating the tarpit links and content.
Their site is down at the moment, but luckily they haven't stopped Wayback Machine from crawling it: https://web.archive.org/web/20250117030633/https://zadzmo.or...