I think a wormhole element could be made the same way we have electrodes, but it would probably be extremely laggy.

If you are thinking of a wall, e-hole does a pretty good job of what you are asking for (though I don't really know how to use it personally).

The doctor:
Coke: no purpose at all...
Hydrogen: download a mod
sugar: no purpose
pepper: no purpose, or would you just find it hilarious when the stick man sneezes?
bone: why? use other solids, I'm sure you can get your required properties by using them.
milk: what is it with you and food?
vinegar: still no purpose...
helium: already have noble gas, ionize that. if all you want is to make it float, than mod it or go with out, it wont help in any way...
baking soda: maybe the only idea that would actually be useful, but has been rejected many times and is still pretty useless
paint: what would you possibly want to do with it?
glue: NO! it has been asked by so many people, and it has been shot in the head by Simon or other users upwards of twenty times

the-doctor
Is that supposed to be a joke?