If you need or want to attach felt to drawer bottoms, here's an easy, fairly mess-free, way to do it. Get a piece of poster board and cut it so that it fits the drawer bottom. You want to cut the poster board so that it fits all the way in the drawer bottom easily, but you don't want any gaps. Once the poster board is cut, spray it completely with the spray adhesive and attach the felt to the board. Push the felt onto the board to get out any air bubbles, then allow the adhesive to dry. Once the adhesive is dry, cut the felt so that it is the same size as the poster board. You can then slip they poster board/felt assembly into the bottom of the drawer. You'll have a nice felt-lined that won't move around or slip and it won't make a mess in the drawer.