What's your favorite Lego piece

[MTBingNinja]

Always loved this piece as a kid.  Brick 1 x 2 with Lego Logo Closed O Style White with Black Outline Pattern.   Always thought this piece to be super rare.  Had it in the 80's.    Certainly not the most valued pieced, but still treasure it today. 
Item No: 3004pb007

 

[koalayummies]

Part 4070, ANGULAR BRICK 1X1, aka the "headlight" brick, introduced by Erling Dideriksen in 1979.

The original SNOT brick and one of the most versatile Lego pieces.

Page dedicated to the headlight brick

Edited December 28, 2019 by koalayummies

[The Island Chronicles]

The hair piece used for the Duke DeTain minifigure. I use that same hair piece for my Lego OC. 

Edited December 28, 2019 by pooda

[The Reader]

The 1x1 trans-lucent plate - in trans-red and trans-green "beloved" parts of my classic space sets.

[LegoDW]

For me its the 1 by 4 hinge plate.  Allowed my classic space sets to have the back of my vehicle open.  Still brings a smile to my face when I find them on sets today.

[Aine]

"I miss simpler items that have been phased out - like the pointed helmet of yore:



IMO, while I tended to overlook it a lot at the time, that really was my favorite Castle-themed headware, and I wish it would come back in some more modern silvered colors. It's not that I dislike the newer gear, but it was cool that that particular helmet offered both protection, realistic looks, AND allowed your to display the character's face. There was something almost kingly about it, too - very reminiscent of the armored crowns that so many monarchs wore into battle."

[gyromuff]

On 12/27/2019 at 9:12 PM, koalayummies said:

Part 4070, ANGULAR BRICK 1X1, aka the "headlight" brick, introduced by Erling Dideriksen in 1979.

The original SNOT brick and one of the most versatile Lego pieces.

Page dedicated to the headlight brick

Ditto