Setup Support/Donation Payment Link for Blog

There are a few passive ways to monetize your blog

If you decide not to put Advertisement on your blog, you could consider a support/donation link.

Buy Me A Coffee

Sample Page
Setup Cost: None
Minimum Withdrawal Amount: No minimum if you have a Stripe account, else $25 minimum threshold via Payoneer
Fee: 5%
FAQ

NOTE: Ko-fi is a similar service

Sample Page
Setup Cost: None (can be done with Personal account)
Minimum Withdrawal Amount: Payment are paid directly into your payment account. Paypal Withdrawal.
Fee: 4.4% + $0.30 - International, 2.9% + $0.30 - Within US (Paypal Seller Fee), fees might varried depending on payment currency.

NOTE: You can create a PayPal Donate button as well. Donate button locked in the currency, but it does provide an option to donate monthly.

NOTE: The major advantage of PayPal is that it allow payment from people who doesn't have a credit card.

NOTE: Refer to Micropayment Fees.

Technically, you can create a wallet and shared the receive payment address (or QR Code) to receive payment.

NOTE: Crytocurrency is a broad and sometimes complex topic. Do take note of some security/privacy best practices.

Example:

NOTE: You could explore Bitcoin Payment Gateway: Bitpay, Coinbase Commerce, CoinGate

NOTE: Refer to Recurring Subscription Payment for Blog.