Here are some custom crystal chamber blade plugs I made for my sabers

Materials:
Bead Store: Pendants, Beads, 18 gauge copper wire
Office store: Adhesive Putty (Sticky Tak)
Procedure Pendants:
1. Wrap putty around the pendant's hanging part and the bottom of the gem
2. Mold to slightly smaller than circumference of the inside of the plug
3. Flatten bottom before insertion.
4. Insert and affix to inside
Procedure Beads:
1. Wrap copper wire around or/and through the beads
2. Leave a fair amount of extra on one side to wrap the putty around for grip
3. Mold to slightly smaller than circumference of the inside of the plug
4. Flatten bottom before insertion.
5. Insert and affix to inside
Of course you can modify this for however you want. These were just my steps!
My Crystals
Chakra Pendant
Quarts with smaller gems in a spectrum
Using this for my RGB Dark Shock, which makes sense due to all the colors the saber puts out.
Amethyst
For my Shock LE in Violet.
When I get it. XD
Quarts
For my Silver Dark Liberator or Sun Rider Arbiter
Clear works for anything really
2 glass beads warped in wire
Just used with materials as a beginning point for testing
Still looks good for anything
Pictures









Pics inside my sabers with crystal chambers:









As a note I love the Manticore emitter because you can have enough space so the blade plug goes in but is not damages as the retention screw is just above the length of the plug.

In my Archon v2 emitter with the vented coupler there is even more space so it doesn't fall out, but does move around a bit. Still no damage to the plug by a retention screw.
If you do use a retention screw against a plug, as some of you may know, it leaves a dent like on the blades, try to avoid this as it will make you plug look like it is damaged and blocs you from seeing the crystal inside.
I still am going to get a Dark War Galive emitter for my Dark Shock RGB for it having a chamber.
I am moving my Manticore emitter to my Shock LE in Violet when I get it.
I also have yet to buy an Overlord in Red
Might for a Reaper too
After those steps are done more pics will go up with those emitters
Next order ill order more extra blade plugs for this.
I had these ones unused as of yet as I always order one with every saber, and only actively used one untill this point as I display my sabers with blades in.. at least until I did this!
Ill be making some saber stands soon too for my vented sabers so you can see the gems inside them!
Hope this inspires more of you to try to make your own chambers!
Even if you don't have a chamber or vents on your saber, the nice part with this is it requires no machine work or cutting of your saber, plus you can show off your gems like in my first pic!