In addition to the basic 5 piece drum set, drummers need toys. Lots of toys.
Here are some of my favorite drum accessories. Follow the links to find them conveniently on Amazon.
1. Meinl Percussion PM-1 Percussion Pedal Mount for Bass Drum Pedals
This is used to mount instruments like blocks, cowbells, and jingles in place to be played with a foot pedal. The feet have spikes that can be adjusted in and out of the rubber pads. The height of the mount can also be adjusted, plus the feet can be elevated to tilt the instrument forward. I own two and am very happy with them.
2. Evans 2-Sided Practice Pad, 12 Inch