Though I don't use a wide variety of technology in the classroom, I do use Geogebra on a nearly daily basis. While much of what I do in Geogebra is made on the fly or is very specific to a classroom discussion, I have made a number of sketches over the years that people may find helpful.
All of the sketches below can be found on my Geogebra page at https://www.geogebra.org/u/hornbeck.david.
Precalculus
Definition of Hyperbola: https://www.geogebra.org/m/a3c2mecj
Linear Transformations: https://www.geogebra.org/m/canhvres
Sine and Cosine Graphs from the Unit Circle: https://www.geogebra.org/m/qqmnn7qu
Tangent Graph from the Unit Circle: https://www.geogebra.org/m/jhmwk4rz
AP Precalculus
Using ARC to estimate IRC: geogebra.org/m/yunqnmwk
Investigating ROC and ROROC: https://www.geogebra.org/m/ydhsugga
Rates of Change Practice: https://www.geogebra.org/m/wptcuvug
Exponential Transformations: https://www.geogebra.org/m/rqhb5bfu
Radian Definition and Arc Length: https://www.geogebra.org/m/hkeyfgj3
Getting a Feel for Sine, Cosine, Tangent: https://www.geogebra.org/m/fdubatzx
Inverse Trig Functions (Domain Restrictions): https://www.geogebra.org/m/ycs7zexs
Rates of Change of Polar Functions: https://www.geogebra.org/m/hp6r3cqn
Calculus
Critical Values Exploration: https://www.geogebra.org/m/fwfvpqzf
Mean Value Theorem: https://www.geogebra.org/m/rzd2ptsw
Riemann Sums: https://www.geogebra.org/m/amb5bugq
Taylor Series for Sine Visualization: https://www.geogebra.org/m/cah49gkk
Algebra
Factoring Applet: https://www.geogebra.org/m/gcjt552a
Linear Transformations: https://www.geogebra.org/m/canhvres
Quadratics and the Symmetry of Their Roots: https://www.geogebra.org/m/svrvjyhp
Vertex Form of a Quadratic: https://www.geogebra.org/m/nxfbnac3
Statistics
One-proportion z-intervals: https://www.geogebra.org/m/x2eykhwc
Cool Math
Mandelbrot Test: https://www.geogebra.org/m/txmkdbyg
Mandelbrot Paintbrush: https://www.geogebra.org/m/xaeynhna
Julia Set Paintbrush: https://www.geogebra.org/m/kdjnqhar
Sierpinski Triangle: https://www.geogebra.org/m/pjatp5w2
Dragon Curve: https://www.geogebra.org/m/b9es26v9
Koch Snowflake: https://www.geogebra.org/m/dn6uh2np