If you are planning a solar system these may allow you to not need an engineering stamp.

Signature Solar

PowerField PowerRack | Solar Module Mounting Rack

PowerField PowerRack Solar Module Mounting Rack: Durable, adjustable, and easy-to-install system for securing solar panels with optimal positioning...

#grow noster

I am considering this set up for they bag.

QMX 5-band 5W Digi transceiver

Powered by AA enloops in 8 or 16 battery holder. Recharge by a 20w folding solar panel.

Digirig Transceiver Compatibility – digirig

Also a android phone, A library on micro SD cards, Rechargeable cr123s for toy accessories, 15 2032 batteries. Small power bank. An SDR receiver. 2 small already tuned antennas.