LEGO part 41750 - Dark Bluish Gray Wedge 8 x 3 x 2 Open Left at BrickScout
LEGO® 41750 6254875 - ToyPro
Amazon.com: LEGO Trolls World Tour Techno Reef Dance Party 41250 Building Kit, Awesome Trolls Playset for Creative Play, New 2020 (173 Pieces) : Toys & Games