I have the kitchen aid attachment holders, which were originally printed from Thingiverse, makersworld doesn't allow remake links from outside sources and I can't find the link again.

However we have a kitchen aid and a Cook lee, and the cook lee attachments are slightly smaller in diameter. I went on Fusion360 and built from scratch one that would work. It took a few prints to get it right but now the piece that sticks out, will stick out fully for a more secure attachment. Let me know if you have any issues or advice to make it better.