12 Volt DC Battery as Power Source for Camping

I'm a total newbie to amps, volts, wattage.

I'm going on a camping trip into the desert for 2 weeks, so I've
purchased a Gel Sealed Lead Acid battery rated for 35 AH. This will
power a combination of DC and AC devices -- mostly fun 12 volt LED
lights, my girlfriend's curling iron and music.

My plan is to attach a cigarette socket with alligator clips to the
battery. From there I will be able to attach a variety of things
including a DC/AC inverter. I understand that the inverter will draw
extra power from my battery, so I'll keep that to a minimum.

I want to connect my small IPOD boombox (LANSING IM7). This is a
small device that can run on batteries OR I can connect it's power
supply/cable to a 120 volt power source. The input on the device says
17 volts == 2.3 amps. I'd rather not invert this device because I
we'll be listening to a lot of music. I'd rather be able to take
advantage of the DC capabilities. The connector on the device is
small and round -- typical for an AC/DC adapter.

Can I purchase converters that will allow me to safely connect this
device to the cigarette socket adapter connected to the 12 volt
battery? Or is this just not safe?

Any help is appreciated.

.

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