Optional Dessicant Container for YAMMU #33

We need a small container to hold dessicant for the YAMMU heated filament chamber.

Dessicant to use:

• Molecular sieve (more expensive, but more effective at low humidity)
• Silica gel beads (most common, can be recharged by heating)

Fan to use:

• 7530 24V (GDSTIME)
• 5015 24V