Create: Interiors 
Create: Interiors is an add-on mod that extends Create's furnishing possibilities
• Chair Blocks
Come in all 16 Minecraft Dye Colors
Right-click with a wrench to cycle armrest state (None, Left Only, Right Only, or Both Armrests)
Can be crafted either from 1 Colored Wool and 2 Wooden Slabs OR from 1 Colored Seat and 1 Wooden Slab
Can be sat on, both as a part of contraptions and standalone
Can pick up entities just like Seat blocks
Bouncy!
• Low Chair Blocks
Same as Chair Blocks, except without legs
Can be crafted either from 1 Colored Wool and 2 Wooden Slabs OR from 1 Colored Seat and 1 Wooden Slab
• Kelp Seat
Cheaper & easier-to-farm alternative to wool chairs
Can be crafted from 1 Dried Kelp item and 1 Wooden Slab
Work exactly like Create's seat blocks
• Kelp Chair
Cheaper & easier-to-farm alternative to wool seats
Can be crafted either from 1 Dried Kelp and 2 Wooden Slabs OR from 1 Kelp Seat block and 1 Wooden Slab
Work exactly the same as colored chairs
• Kelp Low Chair
• Seatwood Planks
Useful together with Copycat Steps & Copycat Panels as a decoration for Seats & Chairs
3 Seatwood Planks can be crafted from 2 Wooden Slabs and 2 Wooden Planks
Contributions
Massive thanks to rdh for all his critical contributions to Create: Interiors.
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Translations!
Thanks to @AsseyGithub for translating Create: Interiors to Korean. 🎉
Thanks to @rim4oo for translating Create: Interiors to Russian. 🎉