You can promote bundles that mix affiliate and non-affiliate products, but you must be clear about what you earn commission from. For example, if you review a skincare set where only one product is linked through your affiliate link, you should mention that. Some merchants may not allow their products to be bundled with items from competitors, so reading their rules is important. The main thing is to stay transparent and honest about what you promote. Have you seen any affiliate programs that restrict mixing products in bundles?