Brown paper tape is a great alternative to plastic tape. This tape is made from 100% recycled materials and if that's not enough it's also 100% recyclable as well as being Vegan Friendly. It's strong, moisture resistant and sticks to all carton surfaces as well as itself. Just use as normal tape.
Do I use it? Of course I do. I tape up all those lovely plastic free parcels I send to you wonderful people. It's available in two sizes to suit your needs; 25mm x 50m and 48mm x 50m.
The lovely manufacturers of this tape are committed to reducing plastics and set themselves a target to reduce plastic usage by 120 tonnes in 2019. By the end of 2019 they had smashed their target with a whopping 190 tonne reduction.