Haptic feedback on samsung galaxy s3 mini
Haptic feedback is still there. Go to Settings > My Device > Sound and it should be around the bottom of the options. It is labled haptic-feedback 

Your keyboard should have its own option, but it depends on the particular keyboard. 

Samsung Keyboard: Click on the 'cog' icon beside the space bar.  Click 'Vibration'. 

SwiftKey: Settings > Sound &amp; Vibration > Keypress Vibration.