Method of trapping Vexes

Making mob museums/jails is a staple of late game survival worlds. It spoils the completionism when there's a mob that is physically impossible to include (the Vex). For other mobs with unique challenges (like having to build part of the museum/jail in the nether to avoid zombifying hoglins/piglins), it's at least possible. I propose either a rare block which they can't pass through (transparent, so you can see the Vex you worked hard to capture) or a method of tethering it to a fixed point (perhaps a vex could be bound to a lightning rod by hitting a nearby vex with lightning, and then it has a light beam between it and the rod which keeps it tethered). I think this presents a fun and challenging way to be able to finally truly finish a mob museum.