|My favorite type is peacock herl body.|
If you are tying beginner, I recommend thread body and no hackle pattern.
You know, the elk hair caddis is very usuful and versatile fly. Actually it is imitate caddis but small one will be small mayfly, and also it will be terrestrial insect in summer.
You should take several size of Elk hair caddis in your fly box.
Enjoy fly tying and tight line!