Good afternoon players. There is some addons which are recently released.
1 - Knitted hat and civilian hat in MP
http://www.moddb.com/mods/hd2-and-ss-merged-campaign-mod/downloads/hd2-knit-cap-and-civilian-hat-fix-v10
2- Mod which gives you all equipment in SP and some other stuff.
http://www.moddb.com/mods/hd2-and-ss-merged-campaign-mod/downloads/hd2-knit-cap-and-civilian-hat-fix-v10