hehe I kinda expected both your questions to be related.
What you could do, if you are really inclined to use meshes (id probably use some spritesheet or so for small details) you could make a lot of tiny bee’s in i.e. 3dsmax and combine them all to be one (rotating) mesh. that way two or three rotating meshes could create a rather interesting swarm.
Additionally either with vertex animation, or world offset material awesomeness you can add additional flow/random to it.