The 1x8x3 25° Slope | New Elementary: LEGO® parts, sets and techniques
Amazon/US] Lego City Switch Tracks 60238 - 12.80/ 20% off : r/legodeal
BrickLink - Part 54091pb03 : LEGO Slope, Curved 8 x 8 x 2 Inverted Double with Medium Azure Hatch with Handle on Lime Background Pattern on Both Sides (Stickers) - Set 41256 [Slope, Curved, Decorated] - BrickLink Reference Catalog
20 LEGO Slope 45 2 x 4 Red Roof pieces + Free Delivery