From the pond:

Amoebae and Heliozoans
Bacteria
Ciliates (Ciliata)
Cryptophytes
Cyanobacteria (Cyanophyta)
Desmids, Zygnematales

(Conjugatophyceae)
Diatoms (Bacillariophyceae)
Dinoflagellates (Dinophyta)
Euglenophyceae (Euglenophyta)
Fungi
Gastrotrich (Gastrotricha)
Green algae (Chlorophyta)

Volvox
Volvox in Rheinberg illumination

Polyps, Hydrae (Cnidaria)
Red algae (Rhodophyta)
Rotifers (Rotatoria)
Water bears (Tardigrada)
Water fleas (Crustacea)
Worms
Xanthophyceae part 1
Xanthophyceae part 2
Zooflagellates
Miscellaneous

Lichens:

Stained thin sections of plants
and animals:

Crystals:

Mosses, Sphagnum, Liverworts:

Pollen and Spores:

Spiders and Ticks:

Butterflies and damselflies: