There were a lot of prompts, a lot of ficlets, and I didn't do the thing I probably should have done of linking back to the original comments. So here, mostly because lists of things done make me feel accomplished, is a masterlist of the prompt fills completed (so far, anyway):
(List = Prompt donor: Fill)
Crossovers
arnie1967:
Not What We Expected (S&S/Press Gang, All ages, 466 words, Lynda, Kenny, Silver.)
justice_turtle:
Press Ganged: Colin (DW/Press Gang, All ages, 509 words, Lynda, Colin.)
justice_turtle:
Press Ganged: Frazz (DW/Press Gang, All ages, 408 words, Frazz, Lynda, Tenth Doctor.)
justice_turtle:
Press Ganged: Julie (DW/Press Gang, All ages, 466 words, Tenth Doctor, Lynda, Julie.)
justice_turtle:
Mousetrap (S&S/Star Trek, 1040 words, Q, Silver.)
belantana:
Undead United (DW/Spooks, All ages, 417 words, Zaf/Charley)
Chalet School
paranoidangel42:
12 Chalet School Icons Doctor Who
belantana:
Circles (All ages, 1261 words, 1980s UNIT OCs.)
persiflage_1:
Passing the Time (All ages, 587 words, Sarah, Harry.)
pitry:
Victory Prelude (All ages, 521 words; Three, Jo, Brigadier.)
Sapphire & Steel
belantana:
Antimony (All ages, 2121 words, Antimony (OC), Sapphire, Steel, Silver.)
jjpor:
Turn of the Century (All ages/PG, 1247 words, Silver, Sapphire, Steel, pre-series.)
john_elliott:
Stealing A Moment (All ages, 520 words. Silver/Sapphire/Steel)