I use removable thermal printed labels to label my beers.

They can be printed on the kind of printer you use for packaging labels. The ones I use are 76mm x 38mm.

You could also write on these directly or paint them with chalkboard paint.

They are quite neat and hang at a jaunty angle.

Link to labels https://www.amazon.co.uk/Direct-Thermal-Labels-Removable-Adhesive/dp/B0DMTGNT1W?pd_rd_w=B2rCC&content-id=amzn1.sym.10dd308b-ce2b-4671-b546-1838901c935f&pf_rd_p=10dd308b-ce2b-4671-b546-1838901c935f&pf_rd_r=HRFAXVMDYB2Q79ZD0H3G&pd_rd_wg=yTXDd&pd_rd_r=bd9991cd-39cd-4fd1-8a8d-08e31a4845ca&pd_rd_i=B0DMTGNT1W&psc=1&ref_=pd_bap_d_grid_rp_hxwhrp_sspa_dk_bia_0_1_ec_t

Link to printer https://www.amazon.co.uk/HotLabel-Thermal-Printer-Shipping-Compatible/dp/B08MT9C15Z/ref=sr_1_1_sspa?crid=TN35U0PJJCKY&dib=eyJ2IjoiMSJ9.jgW0JGR1UtHaM_cPI99Rc2JRi6hdVktxlSWrPO-AwKeFkAXTEXQDJZhrmw0oeqTMDJ6nW7gDQs0ipUfKF7D3YSJmcWdoXjSVTIfWsNO8CXxNa7diWD3Z5aM_743Se-cKO5ggG5AhCe6j6JzMuwhDFD51xo3COKFgm2mTq0G8p40gw_fWvh--jqS2cM2i3BtUh95L7J9ik7Y2E2j0cf-KzIX3ahxfEDEgiKjUoHSSYiOhs20T9xcdLjIrV3GnUwv5ihvegjFZn5m1SM5w52Hj0LZ_U8BizJN-7jZyouBkL90.NGCP9c4H5N12y2K3wi2wwYaJPClQMei9NIiLq92iNvw&dib_tag=se&keywords=hot+label&qid=1774906697&s=officeproduct&sprefix=hot+lable%2Coffice-products%2C227&sr=1-1-spons&aref=9qg9KrZhl7&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&psc=1