Not in St Domingo but on the north coast, some bizar cool lounge pillows! They are 1.80 by 1.40. Extreme hotel has them if you want to see them. They are produced here in Cabarete. I will send you a link by PM.
Hache carries some IKEA style furniture, (at about 5x what you would pay for it in the states) In spite of this I bought some myself since there really aren't many alternatives and I don't like typical Domincan furniture much, except the rattan and bamboo stuff which is great to look at but pretty uncomfortable for general couch-potato (in)activities.