There are now 1,000 bots on http://botwiki.org!
You can import it to Glitch from http://github.com/fourtonfish/glitch-fediverse-bot.
More updates, like support for images and replies are coming soon, for now you can play with the #tracery example.
How to Make a Mastodon Bot: The Definitive Guide
Feel free to share your own botmaking tips!
Fresh off migrating Botwiki to WordPress, I did the same for my personal site:
(They both used picocms.org before.)
A quick tutorial that shows how to make a Mastodon app, which you can then turn into a fun, creative bot: