I've seen them around for years in early spring but I've never noticed any damage that they cause. If indeed they are baby grasshoppers they apparently have to grow up before they can eat a rose bud. The mature ones sure can do some damage. We really haven't had a severe outbreak of Grasshoppers around here in many years. But that usually occurs in late summer/fall. Because Grasshoppers are like many of the pests we encounter that have wings, they move around alot, so there really isn't much a lone gardener can do to curb them (unless he has Moses on his side directing them elsewhere).

Only the guy on the bottom is clear enough for me to recognize, but I'll presume they are all the same thing (although the middle one looks like it could be an exoskeleton.) Anyway, it's just a carpet beetle larva. Completely harmless to people, although they might be nibbling on your carpet, or wool clothing and blankets in your closet.

It looks to me like it might be a mole cricket.

This looks like a variant of the Green Lynx spider. As the name implies, they are usually green, but can change the coloring on their abdomen to shades of pink/purple/brown to better blend in with their surroundings. These beautiful spiders are no threat to humans. They don't even make a big orb web that you might blunder into. They just lie in wait, usually around the tops of flowering plant stems, for an unspecting bug to get close enough for them to grab. Here is a link that might be useful: Green Lynx on BugGuide