When you say "crazy chords" you could be referring to a lot of different things depending on what style you are referring to.
But to keep this helpful instead of exhaustive, let me recommend a few interesting things to explore in your chord choices.
To make major and minor chords, you stack thirds, such as C - E - G or D - F - A. If you keep stacking thirds, you get 7th, 9th, 11th and even 13th chords. (adding extensions can be done diatonically by staying within a key signature or with chromatic alterations, such as sharping an 11th or flatting a 9th.) For example, when you add a B onto a C major chord, you get a C major 7th chord. Add a D on top of that and you get a C major 9th chord. Play around with stacking thirds up to the 9th for each root note of a major scale (the first two in C would be C-E-G-B-D and D-F-A-C-E).
Borrow from other keys
Try using chords from other keys to bring different colors to your song. Some great chords to try are bVII major, II major, iv minor, v minor, or bVI major (in the key of C, these would be Bb major, D major, F minor, G minor, or Ab major.) Sometimes just one of these can make your song feel really fresh. Combine these chords with some extensions from above and you will start to feel pretty cool.
Learn Famous Chord Progressions
A few chord progressions get used over and over again because they always seem to sound great. One to know in and out is the falling 5ths (or circle of fourths) progression: iii vi ii V I, or the shorter ii V I (in C this would be Em - Am - Dm - G - C, or just Dm - G - C). These progressions can again sound great with extensions of all kinds.
Another might be Pachabel's chord progression: I - IV - V - iii - IV - I - IV - V. Or any chunk thereof.
Finally, just learn a lot of songs that you like and copy their chord progressions verbatim. Chord progressions are not copy-righted, and many great songs are built on the chords from other songs. Wikipedia gives a partial list of 16 songs built on "Rhythm Changes," i.e. the chords to Gershwin's "I Got Rhythm." https://en.wikipedia.org/wiki/Rhythm_changes
I hope you find the crazy chords you're looking for soon!