[SankareaUL]

Simple sit

https://dev.bukkit.org/projects/simple-sit

- Would be good for chairs, maybe on a corner (For example, when roleplaying with someone, they just do the action IC. Which is fine, but to see it visually would be very naice! Plus it's not limited to steps.)

Timber

https://dev.bukkit.org/projects/timber

I don't know if there's anything done about treecutting on the server, not tried myself, so this would add to the realism as tree's shouldn't really be floating after cutting a block away. Instant breakdown, only unrealistic thing is the logs not all falling and placing on the ground, but it still beats magical floating blocks!

Realistic Swimming

https://dev.bukkit.org/projects/realistic-swimming

Pretty self explanatory. Looks better.

[Zarkaylia]

I'll be trying to get time to test these this weekend. They're old Bukkit plugins but 2 of them apparently should work for our server version. Remains to be seen if they work with Spigot, but they should. ^^