Moritz at getalby.com suggested we do this so we did.

- adding a lightning address as an HTML meta tag to your website? https://getalby.com/value4value

- a payment widget like https://webln.twentyuno.net/widget

- the WordPress plugin that contains payment buttons, the meta tag and paywalls: https://wordpress.org/plugins/bitcoin-lightning-publisher/

(another Alby product)