These are from game-icons.net and are 512 x 512 pixels two colour icons and completely free to use so long as you give credit and include a copy of the licence or a link to it. There are over 4,000 but you can download a subset if you don’t want the lot. The download file zip file size for all of them as .png is only 33 MB.
Subsets include Animal (182), Building & Place (181), Weapon (172), Symbol & Emblem (171), Body (158), Arrow & Spear (146), GUI (140), Spike, Slash & Crack (138), Head & Face (126), Blade, Sword & Knife (126), Food (125), Liquid (122)Creature & Monster (119), Tool (117) and Board & Card (116).
What’s nice is you can have them as .svg (vector) or .png and have black on white or white on black.
They may look small when shown here but each is 512 x 512 pixels which is a lot.