I'm not normally a fan of the ficus family as bonsai, but this guy has ramification to die for. Unfortunately the photo doesn't show the base of the trunk, which almost fills the length of the pot. The leaves are tiny, not surprising given the number of branches on this tree. The only criticism I had was the faint limescale marking (apparently hard water is an endemic challenge in Spain) on the leaves, which was vaguely distracting.
This photo was taken way before the displays were set out. The white marker tag is still on the right-hand leg of the table.
Accent is a yellow iris about to unfurl. Update: the flower was fully open on Sunday, it's a pale lemon yellow bearded iris. Small irises seem to be a popular accent in Spain.