What are the different types/styles of led holders available?

[Eddie3dfx]

Don't mind me, simply posting led holders for my system.. seeing which ones are nice.
Post if you have a few other in mind that look good.

5mm brass-chrome color (plastic available)

http://www.unique-leds.com/images/detailed_images/5mmbrass.jpg

http://www.unique-leds.com/index.php?target=products&product_id=1810

simply plastic led holder
http://imgs.inkfrog.com/pix/lai/plastic_holder_hktaiyuen_01.jpg

http://rsk.imageg.net/graphics/product_images/pRS1C-2160468w345.jpg

http://www.radioshack.com/product/index.jsp?productId=2062558

4mm led holder? (radio shack)
http://rsk.imageg.net/graphics/product_images/pRS1C-2160466w345.jpg

5mm stainless steel led holder (wish they had a supplier in the U.S)
http://i3.ebayimg.com/05/i/06/d1/bf/f5_1_b.JPG

http://ledsee.com/index.php?page=shop.product_details&category_id=11&flypage=flypage.tpl&product_id=151&option=com_virtuemart&Itemid=27&vmcchk=1&Itemid=27

Led Cluster (imho looks ugly)
http://www.autodirectsave.com/Assets/ProductImages/light1.jpg

Bulgin Indicator led/light (purdy)
http://img.directindustry.com/images_di/photo-g/indicator-light-34949.jpg

copper-nickel plated
http://www.domax.com.tw/Product-2002111414335-l.jpg

http://rsk.imageg.net/graphics/product_images/pRS1C-2160472w345.jpg

http://rsk.imageg.net/graphics/product_images/pRS1C-4479146w345.jpg

http://www.dragonmodz.net/images/IMG_1260.JPG

hole sizes for 3mm and 5mm leds.
http://www.dragonmodz.net/images/led_accessories/chrome_3.JPG

http://www.elektrotech.hu/images/6026.jpg