Explain your idea

The idea is a block, for collecting item drops, like from vanilla farms, but specifically without an inventory. (as otherwise it would just be a vacuum chest), this would be useful for collection from vanilla styled farms, as well as a good way to transfer item entities into storage
For appearance I was thinking it might look good as a large natural magnet, but if it is more balanced/feasible for it to be powered. then a large electromagnet would also make sense and fit IE's appearance. (there is also a less feasible idea, for it to be a small multiblock, but I suspect that to be more work, and less viable to implement, but could allow more creative freedom in the appearance)