Cartoon thumbs up in black and white based on Thumbs Up (#2) by oksmith from openclipart.org/295787 Optimized in Simplify SVG files and path data https://herrstrietzel.github.io/svg-path-simplify/ and in SVGOMG https://jakearchibald.github.io/svgomg/

Sperm cell with cartoony eyes and an uwu mouth based on openclipart.org/355915

Simple ball with a frown. It came to me in Mars. Drawn in Inkscape, optimized in SVGOMG.

Sperm cell with cartoony eyes. Basic shape hand-drawn in method.ac and then edited in Inkscape. Optimized in SVGOMG. Inspired by discussion about the Audacity 4.0 logo.

Empty jar originally based on openclipart.org/304991 - edited in Inkscape (Extensions/Color/HSL Adjust), optimized in SVGOMG

Empty jar based on openclipart.org/304991 - edited in Inkscape, optimized in SVGOMG

Sperm cell with cartoony eyes and a mouth based on openclipart.org/355915

Old glass trash container hand traced from a photo of mine of a glass recycling dumpster in the area. Black outlines, white surfaces. Optimized in SVGOMG. For emptying, a top loader truck with a crane arm raises the glass recycling container above the truck bed container and opens the dumpster into two, kind of like an upside-down scallop sea shell. The two halves don't have a snug fit, which explains the dirty-seeming vertical lines in the middle of the the right side. I suppose the bottom base is connected and should also be split and uneven at the split line.