50 NEW LEGO Medium Stone Grey 1x1 Plates (3024/4211399) light bluish grey | eBay
Amazon.com: Classic Building Bulk Brick Block 1x1, 300 Piece Building Brick Dark Grey, Compatible with Lego Parts and Pieces 3005, Compatible with Major Brands(Colour:Dark Grey) : Toys & Games
Tile, Modified 1 x 1 with Clip : Part 2555 | BrickLink