Yes @BitcoinBrabant, there's a couple of BTC LN themed sticker files in the Bitcoin Media Kit in the Satoshee BTC Accepted here Stickers section:

Google Drive

Satoshee BTC Accepted here Stickers – Google Диск

Feel free to check out the whole kit (available for free or you can name your price):

Bitcoin Media Kit – Satoshee

Also, feel free to contribute more assets to the kit! :) There's definitely a shortage of LN-themed BTC media assets.