My 4-way has an C14 plug on it, and I have a selection of short X-to-C14 cables.
You can also find local-to-C14 almost everywhere. The the fact your multiway has an "IEC" plug and the adapters won't reach from wall to monitor tends to limit the "borrowing".
Only downside is that all C14 plugs and line sockets are a total pain in the arse to rewire.