Surely, one of you fine folks has a better solution to attach a spare fan to an ISP gateway without damaging it?

https://sh.itjust.works/post/8683551

Surely, one of you fine folks has a better solution to attach a spare fan to an ISP gateway without damaging it? - sh.itjust.works

Can you get zip-ties in those holes?
I may be able to get the smallest available zip ties in there. Maybe it’s possible to bend a wire and hook it through one hole and up another.
Bend the end of a zip tie into a U shape roughly the size of hole spacing and try feed it in one hole and out another.
The plastic and wire twist ties that come on cables would work too.