My sons don't believe gift cards are a "real" gift

. So, I wanted to get a little something to go along with the Target gc's I am getting their teachers. One of them has a first year teacher, so I was thinking of getting some stamps or stickers for papers. Any suggestions on where to get them? Our teacher store closed. Or, is there any other thing a new teacher would need?
TIA
As a former first year teacher , I think the best gifts are anything you think that teacher would love. Avoid weird looking nick nacks and candles as those often are not needed for the room. My favorite/most used gifts I have received are a beautiful pencil holder, a post it notes holder with post its, a coffee mug that I put bookmarks in, a nice little hand painted tray that I set up at my house for decoration, a set of pens, a cute little eraser and a bracelet.
suggestions-
primary grades (K-3)- stickers/stamps, pens, cool picture books, class puzzles/games, timer, apple themed stuff, crayons/markers etc
intermediate grades (4-6)- pens, dry erase markers, post its, hand sanitizers, chapter books, mugs/pencil cups/organizers, erasers/pencils/markers etc.
junior high/high school- school supplies, mugs, dry erase markers
Good luck and that's super nice of you to think about your child's teacher...I know he/she will appreciate whatever you send