A Viking Age colour palette + bit of info on the dyes. And here's a text only page with a great list of dyes definitely and probably used: www.cs.vassar.edu... And some local colour variations, eg purple in Ireland.
Corrugated cardboard, duck tape, paint, and a milk jug become a wonderful extension in learning about Vikings with this craft! Stop by Relentlessly Fun, Deceptively Educational for a book recommendation and instructions.
The only existing Viking Age helmet was found at a Norwegian burial site in1943, among objects which date back to the 900's. Chain mail, three swords, three axes, three spearheads, riding equipment, game pieces and dice were also found. It is believed that one of the buried men was a petty king from the Ringerike area.
Nordo-Celtic knot symbolizing the Drakkar longships paired with the central Icelandic Vegvisir ("sign post"), which is a type of late medieval bind-rune that was a magic sigil to prevent the bearer from getting "lost in the storm". The Vegvisir is often erroneously identified as a Viking-age rune.