Photo tile recommendations please

[cambsno]

Planning to revamp my many frames on my walls as due to redecorate. These are mainly ikea frames, generally box type ones but a main wall has a nice mix of frames in various styles and colours. These issue I have is the thunderflys that seem to get in the frames. So looking for a more modern tile set.

I’m tiles have some nice products but they tend to be fixed in size and I may want to go bigger. Any recommendations for companies that do nice quality tile type products