The best gift for a best friend is an inside joke she can wear. Candles and mugs say "I remembered". A shirt that says "I know exactly who you are" gets screenshotted and sent to the group chat. Five ideas, each for a different kind of best friend. All €38, oversized fit, printed to order in the EU, sizes S to 5XL. That fits under a €40 limit, and it's still on time for Christmas if you order early.
For the friend you tell everything: Second Group Chat
"I'm the reason there's a second group chat." Every friend circle has one, and every friend circle knows who caused it. Give it to the person who did. See the shirt, €38.
For the friend who sends you the same video: Great Minds Rot Alike
The two of you send each other the same reel in the same minute. Buy two and wear them to the same party. See the shirt, €38.
For the friend who texts too much after midnight: Anything I Said After 2 A.M. Is Legally Fiction
You've read her voice notes. You know. This is the disclaimer she should have printed years ago. See the shirt, €38.
For the Christmas gift: On the Naughty List. Worth It.
Red marker on white, and a year's worth of bad decisions behind it. The one to wrap if the gift has to be Christmas-shaped. See the shirt, €38.
How to pick
Think of the last story that ended with "don't tell anyone". The shirt for that story is the right one. If you can't decide, Great Minds Rot Alike works for almost any friendship, and you can buy the second one for yourself.
Gifting someone else too? Funny gifts for her and Secret Santa gifts under €40 have more.