These icons are taken from the thenounproject.com.

teapot.png: https://thenounproject.com/term/teapot/38350
hammer.png: https://thenounproject.com/term/hammer/106008
gauge.png: https://thenounproject.com/term/gauge/175809
spigot.png https://thenounproject.com/term/spigot/595472/
restart.png: https://thenounproject.com/term/restart/1921191
cross.png: https://thenounproject.com/asmuh/collection/cross/?i=2114095
ok.png: https://thenounproject.com/term/ok/643091/
