This penlight seems perfect for you, in the event of blackouts or just to have on hand. http://www.amazon.com/dp/B0015UC17E/ref=wl_it_dp_o_pC_nS_ttl?_encoding=UTF8&colid=3EFKQT8SS1K99&coliid=I3QM5ZOK2PKI1A&psc=1
Alternatively, there's Israeli tourniquet bandages for 10 each or so.
http://www.amazon.com/Ever-Ready-First-Aid-Compression/dp/B003DPVERM
And a third alternate would be some of these really nice gel pens.
Very bright, and very useful for checking wounds for morning rounds on whatever surgical clerkship one might be on.
You've posted the same question to both the EMS and Fire subs; with your question specifying Christmas gift, I'm assuming you're seeking help with gift for a friend or loved one that is a FF/EMT or FF/Medic.
Myself, I work for two different agencies, volunteer FF and part-time EMT. There isn't one answer for both jobs.
As an EMT, I carry a Streamlight pen light. Good enough for general use in a dark environment, not so bright you'll completely blind someone checking pupils.
On the fire side, I *do* carry a second one of the above in my bunker gear, but only as an "in case I end up jumping in the boo boo bus on an accident call". I have a light *similar* to this on my helmet, can't remember the brand - but in addition to the forward facing beam, it also has a dimmer light that angles down about 45 degrees in front of you - not as blindingly bright as the main beam, good for close work in front of you. I also carry a handheld light with a pivoting head (pretty sure it's a streamlight, but can't find the exact model on Amazon right now); can either be handheld, or pivot and clip to my bunker coat as a 90° light.
I use stream light pen lights from Amazon. For this exact reason. I do not need a strobing flash light.
Streamlight 66118 Stylus Pro 100-Lumen LED Pen Light with Holster, Black
https://www.amazon.com/dp/B0015UC17E/ref=cm_sw_r_cp_api_i_YRPK1A6E6WP36V27669P