Nice tuto! Lnbits is a great tool.
Here are more guides with Lnbits.
Lnbits for small merchants
and
The bank of Lnbits

In regards of using LNURL for donations, here is a full guide for LNTXBOT (for those who still don't use it)

Another tool that can be used: https://coinos.io - it offers LNURL and LN address too