Lensbaby is a good inexpensive option if you’re looking to learn about tilt-shift photography. Lensbaby even released a step by step guide which you can read here about how to do tilt-shift photography. You can find the Lensbaby Sol 22 f/3.5 Tilt-Shift at B&H Photo.
The Panasonic GH5 is currently discounted $300 along with some m43 lenses at B&H Photo and Adorama. The Panasonic GH5 is also discounted on B&H Photo, Amazon, and Adorama.
TP Leather Case released 8 handmade cases for the Olympus OM-D E-M10 Mark III. You can find them on Amazon.