A carpet beetle or a drugstore beetle is near to your description. They are gray in color with black spots.
This is not nearly enough to identify the insect type.
It is a wasp
Velvet Ant!
There are a few small bugs that are triangular in shape namely Troilus luridus, Sloe Bug, Striped Shieldbug, Green Shield Bug.
The boxelder bug is a black bug whose wings are orange-striped in the shape of the letter "y." The insect in question (Boisea trivittata) sports two sets of wings, with the upper set being edged in orange.
lady bug!
The Italian striped-bug and the orange assassin bug are examples of black-striped, orange-bodied bugs. The former (Graphosomea lineatum) numbers among the world's pentatomids, or nutrient-rich xylem and sugar-rich phloem sap-sipping shield bugs. The latter (Pselliopus barberi) represents the Reduviidae family of beneficial, pest-eating insects.
Possibly a banded alder borer? Possibly a banded alder borer?
Its probbly a woodlouse
a millipede
One black and white striped beetle is the Neoclytus caprea, more commonly known as the banded ash borer. They are found from Idaho to Arizona and to the west of those states.
Grey or black? Black ladybugs with orange/red spots are quite common, but not as common as red with black spots.
Cicada Killer or Mason Wasp