I do this in a weird way; but, I like it. The players seem to like it, too.
**excerpt from my house rules located at
https://homebrewery.naturalcrit.com/share/ywCY_N3xddTT**
Ability score matrix
This matrix represents your options for creating your next 20 characters. Yeah. You'll need to hold on to this. You'll be using this often.
Get your 4 six-sided dice. We're going to be rolling a lot. You're going to roll all four and review the results. If you roll a one on any of them, pick that one up and roll it again. If you get another one, do it again. We reroll all ones.
Add up the top three results and record it. Keep doing this until you've written a row of six numbers. Then, start a new row. You'll keep doing this until you have six rows of six values. These results will be your guide for setting the main abilities of Strength, Intelligence, Wisdom, Dexterity, Constitution, and Charisma.
You can use any row or column forwards or backwards. You can even use the diagonals frontward or backwards. But, you can only use that order once. The key here is that you've rolled a whole matrix that will help you make characters for some time. Once you've created twenty characters with this matrix, destroy it and make a new matrix.