Welcome , nap (now why do I like that handle??)
Hen & Chicks, Semps and Jovi's will grow lot's of places. My personal goal is to one day build a 6' pyramid to display my collection. I'm already experimenting with living walls. So why don't you honor you Aunt by planting some in or on a tree in your area? I'm sure you would enjoy experimenting with that. In the middle ages, they used to grow tectorums on their rooves (or roofs, if you prefer). They provided insulation of course, but the thinking of the time was that they protected the house from lightening - not true.
You can still find pics on the web of semps growing on rooves in England and Europe.
-t
