I've told many a customer to go to a Lowe's or Home Depot and buy that rose trellis / lattice (that lloks like fingers) and then build yourself a supporting base. Place those in the corners of the room and viola....Shatki Hallographs. Yes all you are doing is breaking up the sound waves and yes either product does work.
(Dealer disclaimer that sells these but also gives customers the do-it-yourself option)
(Dealer disclaimer that sells these but also gives customers the do-it-yourself option)