- My daughter has a few LEGO duplo sets. One for example had instructions for building a Minnie Mouse house, but we only did that once. Now all the sets are taken apart and mixed together and she pretty much builds whatever she wants, mixing and building with pieces from 4-5 different duplo sets together.
- It's super easy to buy bins of used legos online, especially in local parenting communities. I see people exchanging bins of LEGO pieces all the time and usually it's just bins of pieces, no instructions or defined sets or plans at all.
- LEGO still makes bins of fairly generic pieces that can be built into all sorts of things: https://smile.amazon.com/LEGO-Classic-Medium-Creative-Brick/...
- My daughter has a few LEGO duplo sets. One for example had instructions for building a Minnie Mouse house, but we only did that once. Now all the sets are taken apart and mixed together and she pretty much builds whatever she wants, mixing and building with pieces from 4-5 different duplo sets together.
- It's super easy to buy bins of used legos online, especially in local parenting communities. I see people exchanging bins of LEGO pieces all the time and usually it's just bins of pieces, no instructions or defined sets or plans at all.