I use
Leviton Quickport boxes and plug in jacks and mine use a phone type punch down connector. (looks like a little blade you press the wire into a conductive holder that grabs it tight, like a phone punch down block) I have a bunch of them, (one example SKU is "Quickport Snap-in design No. 5G108-W" which is a 10 pack of female Cat 5e jacks, 8 position, 8 conductors
Mine are labeled Cat5e but they work great for Gigabit Ethernet as well. Have never presented any kind of problem.
The boxes will accept different numbers of female Ethernet jacks, (3 is what I usually use.) they are neat, they seem to even tolerate not being connected to the wall okay. In other words you can mistreat them and they don't come undone.
Just if you have multiple (like three) cables coming into your box, multiple cable tie the three cables together so its not a tripping hazard. Also use a nylon cable tie so they have strain relief.
I would strongly recommend mounting the boxes to walls but sometimes you need them to be available somewhere else, like on a table.
Since nobody else brought this up
it is absolutely imperative to keep your Ethernet wires away from mains power wires. Don't ever attempt to run them through the same conduits or share boxes with mains power carrying anything. Also keep them away from CATV wires or any other kinds of low or high voltage wires.