Incandescent nostalgia? $15 worth of 3-cell PR bulbs that, really, I don't need. KPR103 and 130 in 10-packs because, why not? Also some vacuum PR versions. And a couple of HPR44 and a HPR53 because, though comparatively expensive, they might be neat.
Back in 1985 I had a 6V lantern that came with a halogen (HPR51? HPR50?) that was really bright at the time (60lm? tight focus) and never burnt out (my parents still have and use it occasionally)
I got a bunch of Maglites, including a 3D and 3C incandescent that _weren't_ the new Xenon type. Also got a 4D and 2D xenon, and I do have an old PR collar so could use those. Somewhere I have two other collars from InReTech triple-luxeon upgrades. Never mind the handful of xenon official maglite bulbs I got with them because, well, they _are_ really good incandescent bulbs. Not sure how the bi-pin are better than the PR mag-num-star version, but whatever. Maybe so people won't put PR bulbs in the lights and wonder why it's not as bright any more (same maglite logic that had them saying OMG! No rechargeables! for so long).
Anyway, some cheap fun just having a pile of 3-cell flashlight bulbs. A Sofirn IF22A came in the same day's mail. Guess I just like flashlights.