Merchandise is a key component of most musicians' income plan. Band CDs don’t sell like they used to and streaming royalties usually don’t add up like they should, so many artists now rely on the money they may get from selling items such as clothing, stickers, pins,...

The idea of musicians accepting tips is not a new one. In fact, far from it! Those who enjoy what they see and hear have been giving a few cents or dollars to artists for pretty much…forever. For decades, this has taken the form of artists busking on the street for...