Print with a perimeters of resulting thickness > 2.4 mm or with 100% infill

Supports are only needed for the cap (paint them in slicer)

Silicagel drying balls with diameter d > 2 mm

Base dimensions - 85x35 mm, Height - 175 mm

Capacity: up to 300 g of silicagel (depending on the silicagel properties)

Wall thickness - 2.4 mm 

Threads - Modified M30x3.5