Amazon has the 635-Piece Nilight Car Push Retainer Clips Kit (CL-86) for $19 with free shipping on $25+ or with Prime. List price: $26. These car retainer clips are made of high-quality black nylon material, anti-wear, and anti-corrosion, which would not break or crack easily during use. Includes cable ties, panel remover tools, and fastener remover.
Has excellent Amazon Reviews.