You might laugh but the old EF 28-70 3.5-4.5 can be had for ~$50-70 no need for IS it is compact and light plus it gives excellent images. Often referred to a poor mans L. Just try to find one they sell very quickly.
Next 100mm 2.8 very good lens sharp and portable
and the venerable 70-200 f4 excellent lenses lens.
Careful shopping and you have 3 very good lenses for under $900 total.