The refs have a bucket full of hockey pucks.
The bucket under the beer tap is to catch drips. I would have used the spilled beer foam piece there if I had another but I used my one for the table outside. I would have liked a barrier between tthe ice an the crowd but the only thing I have maybe suitable is the race fencing and I haven't enough to bother digging out to see if it would work.
I have no idea if puck buckets are a real thing or not, I just added it because I needed a thing.