The wiggle expression is a great way to introduce randomness to your image, solid or shape in After Effects, but when applied to scale it wobbles both dimensions separately. What happens if you want to wiggle them both together? Don't worry, it's a simple solution and just requires a little bit of understanding about how the Wiggle Expression works.
Expressions
Regular wiggle: 
wiggle(5,50) 
Uniform scale wiggle:
var w = wiggle(5,50);
[w[0],w[0]]

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