as a former squid (navy), i love knots! i especially like ones that are useful first, decorative second, and both most of all. these knot "hubs" are simple accessory, multiple-attachment points that can be used singly or in combination to serve a variety of outdoor, indoor and workshop needs. they are all based on a form of knotting called "crowning." there are other instructables that do a fine job of explaining the rudiments of crowning, so i'm not going to go into it too much. this instructable is on a way to use crowning to create multiple-attachment hubs for any variety of uses. enjoy!
Step 1: step one - creating a loop
i've found, at least for me, the easiest way to begin this endeavor is to close up a piece of line into a loop. you can use any number of knots to create a loop from a line (carrick bend, overhand of two strands, figure eight of two strands, fisherman's bend, etc...). i prefer a standard matthew walker knot; it's easily consructed, secure and can be undone even after stressed (three tenets of a great knot). again, this instructable is to create a useful hub for multiple attachments. there are many great instructables out there on how to tie these bends and knots and i don't want to repeat them. my purpose is to show something that can be done with them.
i should note that there are more "permanent" ways to create loops using different splicing techniques depending on whether you're using hawser laid rope or core-and-sheath line. they're harder to undo (pretty well not gonna happen for core-and-sheath line) if you happen to need said line for another purpose at a given moment - and i'm kinda all about modularity and multiple uses when it comes to functional knotting.