The Cuetec Bowtie is a very useful 3 in 1 tool to maintain your tip.
This 3 in 1 tip tool includes a shaper, a scuffer, and a tip pick that pokes the tip so it can hold chalk better and helps to avoid miscues.
Cue Tip Scuffer: scuff the surface of the tip so it will hold chalk
Cue Tip Shaper: shape the tip to the desired curvature you are looking for
Cue Tip Aerator: stitch the leather of the tip to soften it and improve the adhesion of the chalk