Hi i made my first plugin to wordpress sites.

https://pl.wordpress.org/plugins/crypto-donate-posts/

This plugin allow you to add bitcoin, dogecoin, zcash and ethereum donation button under all your wordpess posts.
This plugin also have shorcodes of Bitcoin, Dogecoin, Zcash and Ethereum, you can add to a single page or widget.
One shortcode per one page.

Its easy to use. You can find plugin even in wordpress add new plugin pages, when you type "Crypto Donate Plugin for WordPress".

I made also tutorials how to use plugin: http://www.cryptodonateposts.com/tutorial/

Here is plugin official page: http://www.cryptodonateposts.com
Screenshots: http://www.cryptodonateposts.com/screenshots/
Github: https://github.com/CryptoDonatePlugin/CryptoDonatePluginForWordpress

I will be upgrade this plugin (add some more crypto, better look, add languages to plugin and readme file, add history of donation - i have concept of this).

If you want to help me with upgrading this plugin pls give some donates:
Bitcoin: 38YcpK8qoxfrK8Dk5zT9XjM1VhuGKpCK3N
Dogecoin: DCQ13BmPHFv7s12xvHUfz6de2wqQbuTxFw
ETH: 0xb469e2085bAD991C6d964Ff1E7D9F6DFfFECA819
ZCASH: t1h2bJzyZWqEknwF14gQXppGvE2NTFaKADK

You can also write in this topic witch cryptocurrencies do you usually use. It will be helpfull because now i add crypto one by one, but when i finish system of donation history i want to add most popular cryptocurrencies to my plugin.

If you have some questions or problems with plugins you can write here.