I'm interested: the only one that I can think of that has some limitations is the second amendment? Are there others?
As to the first amendment: Although not equal to that of adults, the U.S. Supreme Court has said that "minors are entitled to a significant measure of First Amendment protection." Only in relatively narrow and limited circumstances can the government restrict kids' rights when it comes to protected speech. (Erznoznik v. City of Jacksonville, 422 U.S. 205 (1975).)
The Bong hits 4 Jesus case[1] clarified that minors don’t have full first amendment rights since they are compelled to attend school, and government employees can punish them for their speech.
My memory is failing me for the relevant case name but I’m also fairly sure students don’t have full 4th amendment rights, again because they are compelled to attend school and the government employees are allowed to search them at any time
Why is the second amendment excepted? Nothing in the text says anything different from the others with regards to age.
And don't say "because it's insane for kids to buy deadly weapons" because that doesn't seem to figure into any other part of second amendment interpretation.