Treehouse

What there is most of

• Brick 1 x 2 · White×20
• Brick 1 x 2 · Reddish Brown×19
• Plate Round 1 x 1 with Solid Stud · Lime×15
• Tile 1 x 2 with Groove · Light Bluish Gray×15
• Brick Sloped 30° 1 x 1 x 2/3 (Cheese Slope) · Reddish Brown×14
• Plate Round 2 x 2 with Axle Hole Type 1 (+ Opening) · Green×13
• Plate 1 x 2 · Reddish Brown×11
• Brick 1 x 1 · White×10
• Brick Sloped Inverted 45° 2 x 1 · Dark Brown×10
• Brick Sloped 45° 2 x 2 · Red×8
• Plate 2 x 4 · Reddish Brown×8
• Tile 1 x 1 with Groove · Dark Bluish Gray×8
• Brick 2 x 2 · Reddish Brown×7
• Brick Sloped 33° 3 x 1 · Reddish Brown×7
• Plate 2 x 3 · Dark Green×7
• Tile Round 1 x 1 · Light Bluish Gray×7
• Brick Arch 1 x 5 x 4 [Irregular Bow, Raised Underside Cross Supports] · Reddish Brown×6
• Brick Special 1 x 2 with 2 Studs on 1 Side · Red×6
• Plate Special 1 x 4 with 2 Studs, 3 Bottom Tubes · Light Bluish Gray×6
• Plate 2 x 6 · Green×5

The twenty most numerous parts, longest bar first. Start a checklist to see all 93 part types and tick them off as you find them.