This is a list of the trailing succulents which I have in my plant-mobiles. I’m sure there are other succulents which would also look good suspended in the Balanced-Earth vessels. These are mine:
Sedum morganianum Burrito
Crassula marginata variegata
Ceropegia woodii String of hearts
Crassula Baby’s Surprise
Crassula rupestris ‘Tom Thumb’
Crassula perforata f. variegata
Haworthia fasciata “Alba”, this is a succulent though not trailing. However its’ compact stripy spikiness looks good in the paper-pulp vessel.