Tascam DR-05 Digital Audio Recorder for $49 or AKG D8000M Dynamic Vocal Microphone for $19

Built-in stereo condenser omnidirectional microphones with sensitivity up to 125dB SPL
Up to 24-bit/96kHz WAV (BWF) linear PCM recording
Stereo MP3 recording from 32-320 kbps bit rate
Peak Reduction function, optimized for music recording, automatically sets the gain of while recording
Limiter and low-cut filter to help prevent distortion
Automatic or manual level setting
Self-timer starts recording 5 or 10 sec. after pressing the record button giving you time to get ready
Auto and manual track increment
Variable speed playback (50%-150%) without changing the pitch
Loop and repeat playback
Level Align feature prevents uneven volume levels during playback
Playback EQ setting
Editing function (Divide and delete)
Up to 99 mark points on each file
Chromatic tuner
Up to 2-second pre recording buffer
Jump back function returns to previous point with one action (1-10, 20, 30 sec.)
Built-in speaker
USB 2.0 port for transfer to PC and external power