Shopify Lite plan for only $9 a month: https://www.shopify.com/lite
Canva for image editing: http://weeknightwebsite.com/canva
Digital Downloads app (free):https://apps.shopify.com/digital-downloads?surface_detail=Digital+Downloads&surface_inter_position=1&surface_intra_position=1&surface_type=search
Printful: https://apps.shopify.com/printful?surface_detail=printful&surface_inter_position=1&surface_intra_position=1&surface_type=search
Single Music: https://apps.shopify.com/single?surface_detail=single+music&surface_inter_position=1&surface_intra_position=1&surface_type=search