I am one of the people who doesn't use a metronome on my phone. I like having a physical metronome in my case. I have used the Korg TM-40 tuner/metronome for years, and it is pretty darn durable. I've dropped it off my stand on to hard wood floors, onto concrete, and tile. It still works fine, but looks sub-optimal. However, I don't remember paying $60 for it; I only paid about $35 at a local music shop. My fellow section leader had the TM-50 which was essentially the same unit. I recently picked up the DeltaLab DMT-1 metronome as my backup metronome. I grabbed it for $7 at Guitar Center. I've only been using it for about a week now, and I've got no complaints.

These for if your school doesn't have gauntlets (whole line will need them).

These are pretty handy if you don't have one, they do everything drumline related.

These are great for practicing, they're heavier than your average sticks.

People say this is the best book ever in terms of learning.

Everyone should use a metronome when practicing.