I've been looking around, hoping to find something that would serve as a base onto which to mount the the "Star Trek: Enterprise" Aenar Andorian antennae I recently bought, and that would raise the height a bit and also fit snugly into the glass dome, but perhaps not an airtight or non-removable seal. Originally, this glass dome (bought from a second hand shop) would have stood on a wooden base, or maybe be fitted with a cork wedge. Everything came together yesterday!
Okay, I've been looking around, hoping to find something that would serve as a base to onto which to mount
Had they been regular blue Andorian antennae, I would have possibly pinned the antennae to some white fur fabric but, being the very pale Aenar antennae, that wouldn't have provided enough contrast.
A few days ago, I was walking home and found a blue plastic lid from a spray can of enamel paint, perhaps abandoned by a local graffiti artist, in the street. I realised that it would provide a firm base, good height, contrasting colour and probably an almost-snug fit. Then I bought some self-adhesive foam lettering and spelled out "AENAR" around the base. I affixed the antennae to the flat surface of the lid with just a small amount of Liquid Nails, and slowly slid the dome over the top, ensuring the antennae touched neither each other nor the inside of the glass dome. There is a small amount of air flow between the raised lettering. Nothing can fall out if a visitor picks up the dome - and I can look out for any signs of premature crumbling. The latex masks from ST:TMP, sold by "It's a Wrap!", were in surprisingly good shape for having been made in 1978 and stored for several decades at Paramount. If my 2005-vintage antennae last me 40 years, I'll be 91 and perhaps ready to sell them on eBay.
I hope I've done it all correctly. I wasn't too keen on attempting to apply special protective resin coatings, or similar, I've heard about, since it may have spoiled the "screen-used" appearance of the antennae.
The pics I took outdoors today have turned out with a yellowish tinge, but the antennae are more of a pale powder blue.