Snowball blocks are also good/easy for large prints. You can do various things with the colors, random, alternating, or all the same... Add sashing and you get sort of a shoo fly design at the corners.
Alternating 9-patches and solid blocks is also a single Irish chain which again changes depending on fabric selection and whether you use the alternating square fabric in the blocks or not, or if you emphasis the 4-blocks into sort of "posies" instead of the diagonals. And again, a sashing can add extra variations.
With low computer usage, and more beginning skill levels, I'm not sure if giving them search terms to look at color/design options on Pinterest or other google searches will be enough. I think one of the hardest things for newer quilters to do is to take the leap to select their own fabrics and modify directions to their desired sizes.